Support for twisted cables.

Sweep now distbutes twists in proportion to segments lengths.
Added  spiral_paths(), segmented_path() and rounded_path_vertices() functions.
Added show_path(path) module.

CHANGELOG.md

@@ -3,6 +3,104 @@
 This changelog is generated by `changelog.py` using manually added semantic version tags to classify commits as breaking changes, additions or fixes.
 
 
+### [v19.6.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.6.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.5.1...v19.6.0 "diff with v19.5.1")
+*   2022-02-06 [`225ea9b`](https://github.com/nophead/NopSCADlib/commit/225ea9b45160195bdf316e7ffdb383a63f898d3c "show commit") [C.P.](# "Chris Palmer") Added `rounded_path()` function to `sweep.scad`.
+
+#### [v19.5.1](https://github.com/nophead/NopSCADlib/releases/tag/v19.5.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v19.5.0...v19.5.1 "diff with v19.5.0")
+*   2022-02-06 [`d341ce4`](https://github.com/nophead/NopSCADlib/commit/d341ce499e56972ff5267d3187387fe7df9d4130 "show commit") [C.P.](# "Chris Palmer") Added `render()` to `pocket_handle()`.
+
+*   2022-02-06 [`e7376e2`](https://github.com/nophead/NopSCADlib/commit/e7376e28c44355efa425b98aa0511ccdf0b63301 "show commit") [C.P.](# "Chris Palmer") Fixed corner block assembly names when overridden.
+
+*   2022-02-06 [`e238eaa`](https://github.com/nophead/NopSCADlib/commit/e238eaa473bac72136507d15c57f6156560d6cfe "show commit") [C.P.](# "Chris Palmer") Removed unused, undocumented function.
+
+### [v19.5.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.5.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.4.1...v19.5.0 "diff with v19.4.1")
+*   2022-02-01 [`04e94a8`](https://github.com/nophead/NopSCADlib/commit/04e94a859aa0d21f840c992b487a901f096790a4 "show commit") [C.P.](# "Chris Palmer") Added `earth_rot` parameter to `NEMA_screws()`.
+
+#### [v19.4.1](https://github.com/nophead/NopSCADlib/releases/tag/v19.4.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v19.4.0...v19.4.1 "diff with v19.4.0")
+*   2022-02-01 [`e696dc4`](https://github.com/nophead/NopSCADlib/commit/e696dc471845550eb94e1b648d8b109cc11a9bf1 "show commit") [C.P.](# "Chris Palmer") Fixed stupid bug in `euler()`.
+
+### [v19.4.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.4.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.3.0...v19.4.0 "diff with v19.3.0")
+*   2022-01-29 [`f33a067`](https://github.com/nophead/NopSCADlib/commit/f33a0675f5b9f6a5ebe1c4b9755e894d1e2b7994 "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2022-01-29 [`5223415`](https://github.com/nophead/NopSCADlib/commit/52234154294011d4cc312f9ff98716f484d20a41 "show commit") [C.P.](# "Chris Palmer") Ball bearing test now two rows.
+
+*   2022-01-28 [`f87f3f5`](https://github.com/nophead/NopSCADlib/commit/f87f3f51ee778ef7ca30319d1d6ff3f4013e8258 "show commit") [M.B.](# "Martin Budden") Added support for flanged bearings.
+Also added some new cartridge bearings.
+
+### [v19.3.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.3.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.2.0...v19.3.0 "diff with v19.2.0")
+*   2022-01-29 [`1ee80f4`](https://github.com/nophead/NopSCADlib/commit/1ee80f4a908ff9939d06186f3b22f54f726fc4d2 "show commit") [C.P.](# "Chris Palmer") Ribbon clamps can now be made to hold multiple ribbons.
+
+*   2022-01-29 [`4340884`](https://github.com/nophead/NopSCADlib/commit/43408843af2c9b0924d4f5c29ff96644b5f48295 "show commit") [C.P.](# "Chris Palmer") `Butt_box` now has a `thin_blocks` property to make it use `2screw_blocks` instead of fixing blocks along the edges.
+
+*   2022-01-29 [`c4ccc30`](https://github.com/nophead/NopSCADlib/commit/c4ccc30b35f9b96c8b891efbe424a31bab7e1904 "show commit") [C.P.](# "Chris Palmer") Added `2screw_blocks,` a two screw version of corner blocks.
+
+*   2022-01-29 [`20db11f`](https://github.com/nophead/NopSCADlib/commit/20db11f81eb713b255c41e3be7e5b9c0373646de "show commit") [C.P.](# "Chris Palmer") Box top bezels can now be modified by adding a child that gets subtracted.
+
+*   2022-01-29 [`d82db46`](https://github.com/nophead/NopSCADlib/commit/d82db46ea11d99c92cd845a05cc6f9fc069f9497 "show commit") [C.P.](# "Chris Palmer") Added missing description for terminals.
+
+*   2022-01-26 [`ac58524`](https://github.com/nophead/NopSCADlib/commit/ac58524b8553d09356ca78e830c5ef47d1c1f05b "show commit") [C.P.](# "Chris Palmer") `Butt_box` `star_washers()` property renamed `bbox_star_washers()`.
+
+*   2022-01-26 [`ef06aa4`](https://github.com/nophead/NopSCADlib/commit/ef06aa43875aad40b016fb2939f256e074699bcf "show commit") [C.P.](# "Chris Palmer") `Butt_box` size and volume echo changed to show `Butt_box`.
+
+### [v19.2.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.2.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.1.0...v19.2.0 "diff with v19.1.0")
+*   2022-01-25 [`d775a16`](https://github.com/nophead/NopSCADlib/commit/d775a16baa818e04d707e6759fe480bb88bf8b5f "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
+
+*   2022-01-25 [`682b8ca`](https://github.com/nophead/NopSCADlib/commit/682b8caf4172d51de1ec191051da6eb432e1b35e "show commit") [C.P.](# "Chris Palmer") Removed CB- prefix from PSU descriptions.
+
+*   2022-01-25 [`c915dd8`](https://github.com/nophead/NopSCADlib/commit/c915dd8c5cc3dbc365ccc18a7a2fc00374fdafbe "show commit") [C.P.](# "Chris Palmer") Made `butt_box` example smaller to make room for more PSUs.
+
+*   2022-01-23 [`6805638`](https://github.com/nophead/NopSCADlib/commit/680563808aeb129e63de660df09c0c2d53775a65 "show commit") [M.B.](# "Martin Budden") Added ability to add PCB to PSU.
+Also added two slimline LED PSUs with PCBs and terminals at both ends.
+
+### [v19.1.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.1.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v19.0.0...v19.1.0 "diff with v19.0.0")
+*   2022-01-25 [`127aab2`](https://github.com/nophead/NopSCADlib/commit/127aab2e7ab87ed801b9463d6437983646dacdb5 "show commit") [C.P.](# "Chris Palmer") Added test for terminals to get documentation.
+Updated images and readme.
+Note BigTreeTech Relay Module `v1.2` PCB added.
+
+*   2022-01-23 [`df3da13`](https://github.com/nophead/NopSCADlib/commit/df3da13d6b7c75f41aaf3e499815b51e39e06fea "show commit") [M.B.](# "Martin Budden") Added support for terminals on PCBs.
+
+## [v19.0.0](https://github.com/nophead/NopSCADlib/releases/tag/v19.0.0 "show release") Breaking Changes [...](https://github.com/nophead/NopSCADlib/compare/v18.4.0...v19.0.0 "diff with v18.4.0")
+*   2022-01-23 [`d4e8dd8`](https://github.com/nophead/NopSCADlib/commit/d4e8dd831187ea87ab8618f52541f3e53c0c17f8 "show commit") [C.P.](# "Chris Palmer") `Wire_hole_radius()` now rounded up to half mm diameters to match metric drills.
+`mouse_grommet` STL name is now based on the diameter instead of the radius.
+Added `mouse_grommet_length(r)` and documented `mouse_grommet_offset(r)`.
+
+### [v18.4.0](https://github.com/nophead/NopSCADlib/releases/tag/v18.4.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v18.3.2...v18.4.0 "diff with v18.3.2")
+*   2022-01-23 [`1928ec6`](https://github.com/nophead/NopSCADlib/commit/1928ec6fb162d44ffa2a8b37cdc5a064040e043c "show commit") [C.P.](# "Chris Palmer") Box can now be named to allow more than one in a project.
+`box_hole_inset(type)` documented.
+
+#### [v18.3.2](https://github.com/nophead/NopSCADlib/releases/tag/v18.3.2 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v18.3.1...v18.3.2 "diff with v18.3.1")
+*   2022-01-23 [`f4b9ab9`](https://github.com/nophead/NopSCADlib/commit/f4b9ab961cea8364eaf6b75cd308b91978234ae8 "show commit") [C.P.](# "Chris Palmer") Fixed `blower_exit_offset()` for square blowers with 2 screws.
+
+#### [v18.3.1](https://github.com/nophead/NopSCADlib/releases/tag/v18.3.1 "show release") Fixes [...](https://github.com/nophead/NopSCADlib/compare/v18.3.0...v18.3.1 "diff with v18.3.0")
+*   2022-01-10 [`317b485`](https://github.com/nophead/NopSCADlib/commit/317b485ee1c17ef8f8004014a54f1c6706201932 "show commit") [C.P.](# "Chris Palmer") Updated the image.
+
+*   2022-01-11 [`ccf2b8e`](https://github.com/nophead/NopSCADlib/commit/ccf2b8e21b0b3a4d8ab72ea5cdecb0cdfb542e47 "show commit") [G.G.](# "Giampiero Gabbiani") Reverted PERF74x51
+
+*   2022-01-08 [`99f277d`](https://github.com/nophead/NopSCADlib/commit/99f277de8d71f289d1a7340995d25309369e145c "show commit") [G.G.](# "Giampiero Gabbiani") Fixed offset calculations
+
+*   2022-01-07 [`fe1ab5d`](https://github.com/nophead/NopSCADlib/commit/fe1ab5d59a5a4746a383111d1d2a558385f820f6 "show commit") [G.G.](# "Giampiero Gabbiani") Fixed grid origin offsets
+
+### [v18.3.0](https://github.com/nophead/NopSCADlib/releases/tag/v18.3.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v18.2.0...v18.3.0 "diff with v18.2.0")
+*   2022-01-10 [`49c2607`](https://github.com/nophead/NopSCADlib/commit/49c26079fea1be8eb4a69d7468fb12df4595ec4c "show commit") [C.P.](# "Chris Palmer") Added `M3x6_hex_pillar`.
+
+*   2022-01-10 [`b5ee63b`](https://github.com/nophead/NopSCADlib/commit/b5ee63bfc40b9ee698d44f435e58cfbc49ec259c "show commit") [C.P.](# "Chris Palmer") Added more documentation for microswitches.
+
+*   2022-01-10 [`a5bc80c`](https://github.com/nophead/NopSCADlib/commit/a5bc80c0e865335cde29db9203438fe4bc659f43 "show commit") [C.P.](# "Chris Palmer") Added `D_plug_d()` function.
+
+*   2022-01-10 [`bf8014f`](https://github.com/nophead/NopSCADlib/commit/bf8014fba0ed630898037712d2fdc432d7966d97 "show commit") [C.P.](# "Chris Palmer") Added `tubing_ir()` function.
+
+### [v18.2.0](https://github.com/nophead/NopSCADlib/releases/tag/v18.2.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v18.1.0...v18.2.0 "diff with v18.1.0")
+*   2021-12-14 [`608f0b2`](https://github.com/nophead/NopSCADlib/commit/608f0b2db052b0c79597be39de5e89b9989e9270 "show commit") [C.P.](# "Chris Palmer") Simplified teardrop top length calculation.
+
+*   2021-12-11 [`8682d0a`](https://github.com/nophead/NopSCADlib/commit/8682d0a4705ed2d85213d85702b5b9b039906f48 "show commit") [M.B.](# "Martin Budden") Allow configuration of teardrop angle.
+
+### [v18.1.0](https://github.com/nophead/NopSCADlib/releases/tag/v18.1.0 "show release") Additions [...](https://github.com/nophead/NopSCADlib/compare/v18.0.0...v18.1.0 "diff with v18.0.0")
+*   2021-12-14 [`abe1b1d`](https://github.com/nophead/NopSCADlib/commit/abe1b1db0157a86af14a68ec42bdaa3e079e73a3 "show commit") [C.P.](# "Chris Palmer") Updated readme.
+
+*   2021-12-14 [`71f935d`](https://github.com/nophead/NopSCADlib/commit/71f935de8e24673a10707cfe434a2faaf3de1c28 "show commit") [M.B.](# "Martin Budden") Corrected FOV handling.
+
+*   2021-08-09 [`4138ed4`](https://github.com/nophead/NopSCADlib/commit/4138ed438e1111bafbe3bee17021a922966c334b "show commit") [M.B.](# "Martin Budden") Added ability to display camera field of view.
+
 ## [v18.0.0](https://github.com/nophead/NopSCADlib/releases/tag/v18.0.0 "show release") Breaking Changes [...](https://github.com/nophead/NopSCADlib/compare/v17.10.0...v18.0.0 "diff with v17.10.0")
 *   2021-12-12 [`970c538`](https://github.com/nophead/NopSCADlib/commit/970c5384960bb4c436cb789a1c5869c0a4adfaa5 "show commit") [C.P.](# "Chris Palmer") Updated images and readme.
 

global_defs.scad

@@ -35,6 +35,7 @@ cnc_bit_r       = is_undef($cnc_bit_r)       ? 1.2    : $cnc_bit_r;       // min
 show_rays       = is_undef($show_rays)       ? false  : $show_rays;       // show camera sight lines and light direction
 show_threads    = is_undef($show_threads)    ? false  : $show_threads;    // show screw threads
 show_plugs      = is_undef($show_plugs)      ? false  : $show_plugs;      // plugs on headers
+teardrop_angle  = is_undef($teardrop_angle)  ? 45     : $teardrop_angle;  // teardrop angle
 pp1_colour      = is_undef($pp1_colour)      ? rr_green     : $pp1_colour;// printed part colour 1, RepRap logo colour
 pp2_colour      = is_undef($pp2_colour)      ? crimson      : $pp2_colour;// printed part colour 2
 pp3_colour      = is_undef($pp3_colour)      ? "SteelBlue"  : $pp3_colour;// printed part colour 3

libtest.scad

@@ -160,10 +160,10 @@ translate([x5, cable_grommets_y + 60])
 translate([x5, cable_grommets_y + 90])
     corner_blocks();
 
-translate([x5, cable_grommets_y + 150])
+translate([x5, cable_grommets_y + 160])
     feet();
 
-translate([x5 + 70, cable_grommets_y + 150])
+translate([x5 + 70, cable_grommets_y + 160])
     screw_knobs();
 
 translate([x5, cable_grommets_y + 470]) {
@@ -198,8 +198,9 @@ translate([900, 750])
 translate([900, 850])
     printed_boxes();
 
-translate([850, 1330 + 85])
-    bbox_test();
+translate([950, 1400])
+    rotate(-90)
+        bbox_test();
 
 inserts_y = 0;
 nuts_y = inserts_y + 20;

printed/box.scad

@@ -30,6 +30,10 @@
 //! ![](docs/box.png)
 //!
 //! Normally the side sheets are the same type but they can be overridden individually as long as the substitute has the same thickness.
+//!
+//! A box can have an optional name to allow more than one in the same project.
+//!
+//! The top bezel can have an optional child, which is subtracted to allow modification.
 //
 include <../utils/core/core.scad>
 use <../vitamins/sheet.scad>
@@ -50,12 +54,13 @@ function box_sheets(type)      = type[3]; //! Sheet type used for the sides
 function box_top_sheet(type)   = type[4]; //! Sheet type for the top
 function box_base_sheet(type)  = type[5]; //! Sheet type for the bottom
 function box_feet(type)        = type[6]; //! True to enable feet on the bottom bezel
-function box_width(type)       = type[7]; //! Internal width
-function box_depth(type)       = type[8]; //! Internal depth
-function box_height(type)      = type[9]; //! Internal height
+function box_name(type)        = type[7]; //! Name for projects with more than one box
+function box_width(type)       = type[8]; //! Internal width
+function box_depth(type)       = type[9]; //! Internal depth
+function box_height(type)      = type[10];//! Internal height
 
-function box(screw, wall, sheets, top_sheet, base_sheet, size, feet = false, shelf_screw = undef) = //! Construct a property list for a box.
- concat([screw, is_undef(shelf_screw) ? screw : shelf_screw, wall, sheets, top_sheet, base_sheet, feet], size);
+function box(screw, wall, sheets, top_sheet, base_sheet, size, feet = false, shelf_screw = undef, name = "box") = //! Construct a property list for a box.
+ concat([screw, is_undef(shelf_screw) ? screw : shelf_screw, wall, sheets, top_sheet, base_sheet, feet, name], size);
 
 function box_bezel_clearance(type) = bezel_clearance;
 
@@ -66,7 +71,7 @@ function box_washer(type) = screw_washer(box_screw(type));
 function box_insert(type) = screw_insert(box_screw(type));
 function box_shelf_insert(type) = screw_insert(box_shelf_screw(type));
 
-function box_hole_inset(type) = washer_radius(box_washer(type)) + 1;
+function box_hole_inset(type) = washer_radius(box_washer(type)) + 1; //! Screw inset from the corner of the internal dimensions
 function box_insert_r(type) = insert_hole_radius(box_insert(type));
 function box_insert_l(type) = insert_length(box_insert(type));
 function box_boss_r(type) = ceil(corrected_radius(box_insert_r(type)) + box_wall(type));
@@ -81,7 +86,6 @@ function box_screw_length(type, top) =
     let(s = top ? box_top_sheet(type) : box_base_sheet(type))
         screw_length(box_screw(type), sheet_thickness(s) + box_corner_gap(type) + box_profile_overlap(type) - 1, washers = 2, insert = true, longer = true);
 
-function box_wall_clearance(type) = box_sheet_slot(type) / 2 - sheet_thickness(box_sheets(type)) / 2;
 function box_margin(type) = box_profile_overlap(type) + box_corner_gap(type); //! How much the bezel intrudes on the specified height
 function box_intrusion(type) = box_hole_inset(type) + box_boss_r(type); //! Corner profile intrusion
 function sheet_reduction(type) = 2 * box_corner_gap(type) + sheet_end_clearance;
@@ -91,6 +95,8 @@ function box_bezel_height(type, bottom) = //! Bezel height for top or bottom
     let(t1 = sheet_thickness(box_base_sheet(type)), t2 = sheet_thickness(box_top_sheet(type)))
         box_corner_rad(type) + box_profile_overlap(type) + (bottom ? max(t1, t2) : t2) - sheet_thickness(box_sheets(type));
 
+function box_bc_name(type, suffix) = let(name = box_name(type)) name == "box" ? suffix : str(name, "_", suffix); // Backwards compatible name
+
 grill_hole = 5;
 grill_gap = 1.9;
 
@@ -143,7 +149,7 @@ module box_corner_profile_2D(type) { //! The 2D shape of the corner profile.
 module box_corner_profile(type) { //! Generates the corner profile STL for 3D printing.
     length = box_height(type) - 2 * box_margin(type);
 
-    stl("box_corner_profile")
+    stl(str(box_name(type), "_corner_profile"))
         difference() {
             linear_extrude(length, center = true, convexity = 5)
                 box_corner_profile_2D(type);
@@ -192,7 +198,7 @@ module box_corner_profile_section(type, section, sections) { //! Generates inter
 }
 
 module box_corner_profile_sections(type, section, sections) { //! Generate four copies of a corner profile section
-    stl("box_corner_profile");
+    stl(str(box_name(type), "_corner_profile"));
     offset = box_boss_r(type) + 1;
     for(i = [0 : 3])
         rotate(i * 90)
@@ -222,7 +228,7 @@ module box_bezel(type, bottom) { //! Generates top and bottom bezel STLs
     height = box_bezel_height(type, bottom);
     foot_extension = foot_height - height;
 
-    stl(bottom ? "bottom_bezel" : "top_bezel")
+    stl(box_bc_name(type, bottom ? "bottom_bezel" : "top_bezel"))
         difference() {
             w = box_width(type);
             d = box_depth(type);
@@ -282,6 +288,12 @@ module box_bezel(type, bottom) { //! Generates top and bottom bezel STLs
                         box_screw_hole_positions(type)
                             poly_circle(screw_clearance_radius(box_screw(type)));
                     }
+            //
+            // Optional child to subtract
+            //
+            if($children && !bottom)
+                translate_z(-box_profile_overlap(type))
+                    children();
          }
 }
 
@@ -355,7 +367,6 @@ module box_bezel_section(type, bottom, rows, cols, x, y) { //! Generates interlo
 
                 translate([0, bw2 / 2, dh2 / 2])
                     cube([eps, bw2 - 2 * dowel_wall + 2 * extrusion_width, dh2], center = true);
-
             }
         }
     }
@@ -371,7 +382,9 @@ module box_bezel_section(type, bottom, rows, cols, x, y) { //! Generates interlo
             union() {
                 clip(xmin = 0, xmax = w, ymin = 0, ymax = h)
                     translate([tw / 2 - x * w, th / 2 - y * h, profile_overlap])
-                        box_bezel(type, bottom);
+                        box_bezel(type, bottom)
+                            if($children && !bottom)
+                                children();
 
                 if(x < cols - 1 && y == 0)
                     translate([w, 0])
@@ -440,7 +453,7 @@ module box_screw_hole_positions(type) {
 }
 
 module box_base_blank(type) { //! Generates a 2D template for the base sheet
-    dxf("box_base");
+    dxf(str(box_name(type), "_base"));
 
     difference() {
         sheet_2D(box_base_sheet(type), box_width(type), box_depth(type), box_sheet_r(type));
@@ -451,7 +464,7 @@ module box_base_blank(type) { //! Generates a 2D template for the base sheet
 }
 
 module box_top_blank(type) {  //! Generates a 2D template for the top sheet
-    dxf("box_top");
+    dxf(str(box_name(type), "_top"));
 
     difference() {
         sheet_2D(box_top_sheet(type), box_width(type), box_depth(type), box_sheet_r(type));
@@ -466,7 +479,7 @@ function subst_sheet(type, sheet) =
         sheet ? assert(sheet_thickness(sheet) == sheet_thickness(s)) sheet : s;
 
 module box_shelf_blank(type, sheet = false) { //! Generates a 2D template for a shelf sheet
-    dxf("box_shelf");
+    dxf(str(box_name(type), "_shelf"));
 
     difference() {
         sheet_2D(subst_sheet(type, sheet), box_width(type) - bezel_clearance, box_depth(type) - bezel_clearance, 1);
@@ -514,7 +527,7 @@ module box_shelf_bracket(type, screw_positions, wall = undef) { //! Generates a
                         square([lip, eps]);
                 }
 
-    stl("shelf_bracket")
+    stl(box_bc_name(type, "shelf_bracket"))
         difference() {
             union() {
                 linear_extrude(w)
@@ -567,25 +580,25 @@ module box_shelf_bracket_section(type, rows, cols, x, y) { //! Generates section
 }
 
 module box_left_blank(type, sheet = false) { //! Generates a 2D template for the left sheet, `sheet` can be set to override the type
-    dxf("box_left");
+    dxf(str(box_name(type), "_left"));
 
     sheet_2D(subst_sheet(type, sheet), box_depth(type) - sheet_reduction(type), box_height(type) - sheet_reduction(type), 1);
 }
 
 module box_right_blank(type, sheet = false) { //! Generates a 2D template for the right sheet, `sheet` can be set to override the type
-    dxf("box_right");
+    dxf(str(box_name(type), "_right"));
 
     sheet_2D(subst_sheet(type, sheet), box_depth(type) - sheet_reduction(type), box_height(type) - sheet_reduction(type), 1);
 }
 
 module box_front_blank(type, sheet = false) { //! Generates a 2D template for the front sheet, `sheet` can be set to override the type
-    dxf("box_front");
+    dxf(str(box_name(type), "_front"));
 
     sheet_2D(subst_sheet(type, sheet), box_width(type) - sheet_reduction(type), box_height(type) - sheet_reduction(type), 1);
 }
 
 module box_back_blank(type, sheet = false) { //! Generates a 2D template for the back sheet, `sheet` can be set to override the type
-    dxf("box_back");
+    dxf(str(box_name(type), "_back"));
 
     sheet_2D(subst_sheet(type, sheet), box_width(type) - sheet_reduction(type), box_height(type) - sheet_reduction(type), 1);
 }

printed/box_assembly.scad

@@ -23,7 +23,7 @@
 // parameters to make the assembly views. E.g. module box_assembly() _box_assembly(box);
 //
 module _box_assembly(type, top = true, base = true, left = true, right = true, back = true, front = true, bezels = true, corners = 4)
-assembly("box") {
+assembly(box_name(type)) {
     echo("Box:", box_width(type), box_depth(type), box_height(type));
 
     t = sheet_thickness(box_sheets(type));
@@ -50,7 +50,9 @@ assembly("box") {
         translate_z(z * (box_height(type) / 2 - box_corner_gap(type) + 50 * exploded()))
             rotate([z * 90 - 90, 0, 0])
                 if(bezels && (z > 0 ? top : base))
-                    stl_colour(pp1_colour) render() box_bezel(type, z < 0);
+                    stl_colour(pp1_colour) render() box_bezel(type, z < 0)
+                        if(z > 0 && $children)
+                            children();
 
         translate_z(z * (box_height(type) / 2 + sheet_thickness + 50 * exploded()))
             box_screw_hole_positions(type)

printed/butt_box.scad

@@ -31,7 +31,8 @@
 //!  * An optional list of fixing blocks to be omitted can be given.
 //!  * Star washers can be omitted by setting the 11th parameter to false.
 //!
-//! Uses [fixing blocks](#fixing_block) and [corner blocks](#corner_block).
+//! Uses [fixing blocks](#fixing_block) and [corner blocks](#corner_block) by default. Setting `thin_blocks` uses 2screw_blocks instead of
+//! fixing_blocks along the sides.
 //
 
 use <fixing_block.scad>
@@ -46,12 +47,13 @@ function bbox_span(type)       = type[4]; //! Maximum span between fixing blocks
 function bbox_width(type)      = type[5]; //! Internal width
 function bbox_depth(type)      = type[6]; //! Internal depth
 function bbox_height(type)     = type[7]; //! Internal height
-function bbox_name(type)       = type[8] ? type[8] : "bbox"; //! Optional name if there is more than one box in a project
-function bbox_skip_blocks(type)= type[9] ? type[9] : [];  //! List of fixing blocks to skip, used to allow a hinged panel for example
-function star_washers(type)    = type[10] ? type[10] : is_undef(type[10]); //! Set to false to remove star washers.
+function bbox_name(type)       = type[8]; //! Optional name if there is more than one box in a project
+function bbox_skip_blocks(type)= type[9]; //! List of fixing blocks to skip, used to allow a hinged panel for example
+function bbox_star_washers(type)= type[10];//! Set to false to remove star washers.
+function bbox_thin_blocks(type) = type[11];//! Set for 2 screw blocks instead of three hole fixing blocks.
 
-function bbox(screw, sheets, base_sheet, top_sheet, span, size, name = "bbox", skip_blocks = [], star_washers = true) = //! Construct the property list for a butt_box
- [ screw, sheets, base_sheet, top_sheet, span, size.x, size.y, size.z, name, skip_blocks, star_washers ];
+function bbox(screw, sheets, base_sheet, top_sheet, span, size, name = "bbox", skip_blocks = [], star_washers = true, thin_blocks = false) = //! Construct the property list for a butt_box
+ [ screw, sheets, base_sheet, top_sheet, span, size.x, size.y, size.z, name, skip_blocks, star_washers, thin_blocks ];
 
 function bbox_volume(type) = bbox_width(type) * bbox_depth(type) * bbox_height(type) / 1000000; //! Internal volume in litres
 function bbox_area(type) = let(w =  bbox_width(type), d = bbox_depth(type), h = bbox_height(type)) //! Internal surface area in m^2
@@ -108,7 +110,10 @@ function fixing_block_positions(type) = let(
                 rotate([y > 0 ? 180 : 0, x * y * 90, 0]),
     ];
 
-function side_holes(type) = [for(p = fixing_block_positions(type), q = fixing_block_holes(bbox_screw(type))) p * q];
+function side_holes(type) = let(
+    screw = bbox_screw(type),
+    holes = bbox_thin_blocks(type) ? 2screw_block_holes(screw) : fixing_block_holes(screw))
+        [for(p = fixing_block_positions(type), q = holes) p * q];
 
 module bbox_drill_holes(type, t)
     position_children(concat(corner_holes(type), side_holes(type)), t)
@@ -226,11 +231,13 @@ module _bbox_assembly(type, top = true, base = true, left = true, right = true,
     width = bbox_width(type);
     depth = bbox_depth(type);
     height = bbox_height(type);
-    echo("Box:", width, depth, height, volume = bbox_volume(type), area = bbox_area(type));
+    echo("Butt_box:", width, depth, height, volume = bbox_volume(type), area = bbox_area(type));
 
     t = sheet_thickness(bbox_sheets(type));
     bt = sheet_thickness(bbox_base_sheet(type));
     tt = sheet_thickness(bbox_top_sheet(type));
+    star_washers = bbox_star_washers(type);
+    thin_blocks = bbox_thin_blocks(type);
 
     function is_missing_screw(p) = p.y > depth / 2 - 1 ? !back : false;
 
@@ -240,13 +247,16 @@ module _bbox_assembly(type, top = true, base = true, left = true, right = true,
             let(q = transform([0, 0, 0], p), thickness = q.z > 0 ? tt : bt)
                 multmatrix(p)
                     fastened_corner_block_assembly(is_missing_screw(q) && ((q.z > 0) != (q.x > 0)) ? 0 : t, bbox_screw(type), thickness,
-                                                   is_missing_screw(q) && ((q.z > 0) == (q.x > 0)) ? 0 : t, star_washers = star_washers(type));
+                                                   is_missing_screw(q) && ((q.z > 0) == (q.x > 0)) ? 0 : t, star_washers = star_washers);
 
         h = height / 2 - 1;
         for(p = fixing_block_positions(type))
             let(q = transform([0, 0, 0], p), thickness = q.z > h ? tt : q.z < -h ? bt : t)
                 multmatrix(p)
-                    fastened_fixing_block_assembly(is_missing_screw(q) ? 0 : t, bbox_screw(type), thickness2 = thickness, star_washers = star_washers(type));
+                    if(thin_blocks)
+                        fastened_2screw_block_assembly(is_missing_screw(q) ? 0 : t, bbox_screw(type), thickness_below = thickness, star_washers = star_washers);
+                    else
+                        fastened_fixing_block_assembly(is_missing_screw(q) ? 0 : t, bbox_screw(type), thickness2 = thickness, star_washers = star_washers);
 
         for(x = [-1, 1])
             translate([x * (width / 2 + t / 2 + eps + 25 * exploded()), 0])

printed/cable_grommets.scad

@@ -158,14 +158,14 @@ module mouse_grommet_hole(r, h = 50, z = undef, expand = wall + clearance) //! M
                 square([2 * R, eps]);
         }
 
-function mouse_grommet_offset(r) = r + wall;
+function mouse_grommet_offset(r) = r + wall; //! Offset of the wire from the ground
+function mouse_grommet_length(r) = 2 * r + 2 * wall + 2 * overlap; //! Length of grommet given r
 
 module mouse_grommet(r, thickness) { //! Make the STL for a mouse grommet
 
     width = 2 * (wall + clearance) + thickness;
-    length = 2 * r + 2 * wall + 2 * overlap;
 
-    stl(str("mouse_grommet_", r * 10, "_", thickness))
+    stl(str("mouse_grommet_", r * 20, "_", thickness))
         rotate([90, 0, 0])
             union() {
                 for(side = [-1, 1])
@@ -193,10 +193,10 @@ module mouse_grommet_assembly(r, thickness)
             mouse_grommet(r, thickness);
 
 module ribbon_grommet_20_3_stl() ribbon_grommet(20, 3);
-module mouse_grommet_15_3_stl() mouse_grommet(1.5, 3);
-module mouse_grommet_20_3_stl() mouse_grommet(2, 3);
-module mouse_grommet_25_3_stl() mouse_grommet(2.5, 3);
-module mouse_grommet_30_3_stl() mouse_grommet(3, 3);
+module mouse_grommet_30_3_stl() mouse_grommet(1.5, 3);
+module mouse_grommet_40_3_stl() mouse_grommet(2, 3);
+module mouse_grommet_50_3_stl() mouse_grommet(2.5, 3);
+module mouse_grommet_60_3_stl() mouse_grommet(3, 3);
 
 module round_grommet_bottom_30_stl() round_grommet_bottom(3);
 module round_grommet_bottom_40_stl() round_grommet_bottom(4);

printed/corner_block.scad

@@ -29,6 +29,9 @@
 //! This allows the block and one set of fasteners to be on one assembly and the other fasteners on the mating assemblies.
 //!
 //! Star washers can be omitted by setting `star_washers` to false.
+//!
+//! A 2screw_block is a thinner version with two screws and two mating surfaces. It can be used as an alternative to fixing blocks when
+//! high lateral rigity is not required.
 //
 include <../core.scad>
 use <../vitamins/insert.scad>
@@ -45,6 +48,7 @@ function corner_block_hole_offset(screw = def_screw) = //! Hole offset from the
     let(insert = screw_insert(screw))
         insert_length(insert) + max(overshoot + screw_clearance_radius(screw), insert_hole_radius(insert)) + 1;
 
+
 function corner_block_width(screw = def_screw) = //! Block width, depth and height
     corner_block_hole_offset(screw) + insert_outer_d(screw_insert(screw)) / 2 + wall;
 
@@ -117,7 +121,7 @@ module corner_block(screw = def_screw, name = false) { //! Generate the STL for
 }
 
 module corner_block_assembly(screw = def_screw, name = false) //! The printed block with inserts
-assembly(str("corner_block_M", 20 * screw_radius(screw)), ngb = true) {
+assembly(name ? name : str("corner_block_M", 20 * screw_radius(screw)), ngb = true) {
     insert = screw_insert(screw);
 
     stl_colour(name ? pp2_colour : pp1_colour)
@@ -192,3 +196,127 @@ module corner_block_M30_assembly() corner_block_assembly(M3_cap_screw);
 //! 1. Lay the blocks on each of their other two flat sides and repeat.
 //
 module corner_block_M40_assembly() corner_block_assembly(M4_cap_screw);
+
+function 2screw_block_width(screw = def_screw) = //! 2 screw block width is narrower, height and depth are as corner_block
+    insert_outer_d(screw_insert(screw)) + 2 * wall;
+
+function 2screw_block_v_hole(screw = def_screw) = translate([0, corner_block_hole_offset(screw)]) * rotate([180, 0, 0]); //! Transform to bottom hole
+function 2screw_block_h_hole(screw = def_screw) = translate([0, 0, corner_block_hole_offset(screw)]) * rotate([90, 0, 0]); //! Transform to front hole
+function 2screw_block_holes(screw) = concat([2screw_block_v_hole(screw)], [2screw_block_h_hole(screw)]); //! List of transforms to both holes
+
+module 2screw_block_v_hole(screw = def_screw) //! Place children at the bottom screw hole
+    multmatrix(2screw_block_v_hole(screw))
+        children();
+
+module 2screw_block_h_hole(screw = def_screw) //! Place children at the front screw hole
+    multmatrix(2screw_block_h_hole(screw))
+        children();
+
+module 2screw_block_holes(screw = def_screw) //! Place children at both screw holes
+    for(p = 2screw_block_holes(screw))
+        multmatrix(p)
+            children();
+
+module 2screw_block(screw = def_screw, name = false) { //! Generate the STL for a printed 2screw block
+    r = 1;
+    cb_width = 2screw_block_width(screw);
+    cb_height = corner_block_width(screw);
+    cb_depth = cb_height;
+    insert = screw_insert(screw);
+    corner_rad = insert_outer_d(insert) / 2 + wall;
+    offset = corner_block_hole_offset(screw);
+
+    stl(name ? name : str("2screw_block", "_M", screw_radius(screw) * 20))
+        difference() {
+            hull()  {
+                translate([-cb_width / 2 + r, r])
+                    cylinder(r = r, h = 1);
+
+                translate([cb_width / 2 - r, r])
+                    cylinder(r = r, h = 1);
+
+                translate([0, offset, offset])
+                    sphere(corner_rad);
+
+                translate([0, offset])
+                    cylinder(r = corner_rad, h = 1);
+
+                translate([0, r, offset])
+                    rotate([-90, 0, 180])
+                        rounded_cylinder(r = corner_rad, h = r, r2 = r);
+            }
+            2screw_block_v_hole(screw)
+                insert_hole(insert, overshoot);
+
+            2screw_block_h_hole(screw)
+                insert_hole(insert, overshoot, true);
+
+            children();
+        }
+}
+
+module 2screw_block_assembly(screw = def_screw, name = false) //! The printed block with inserts
+assembly(name ? name : str("2screw_block_M", 20 * screw_radius(screw)), ngb = true) {
+    insert = screw_insert(screw);
+
+    stl_colour(name ? pp2_colour : pp1_colour)
+        render() 2screw_block(screw, name) children();
+
+    2screw_block_holes(screw)
+        insert(insert);
+}
+
+module fastened_2screw_block_assembly(thickness, screw = def_screw, thickness_below = undef, name = false, show_block = true, star_washers = true) { //! Printed block with fasteners
+    thickness2 = !is_undef(thickness_below) ? thickness_below : thickness;
+    function screw_len(t) = screw_length(screw, t + overshoot, star_washers ? 2 : 1, true);
+    screw_length = screw_len(thickness);
+    screw_length2 = screw_len(thickness2);
+
+    if(show_block)
+        2screw_block_assembly(screw, name) children();
+
+    if(thickness)
+        2screw_block_h_hole(screw)
+            translate_z(thickness)
+                screw_and_washer(screw, screw_length, star_washers);
+
+    if(thickness2)
+        2screw_block_v_hole(screw)
+            translate_z(thickness2)
+                screw_and_washer(screw, screw_length2, star_washers);
+}
+module 2screw_block_M20_stl() 2screw_block(M2_cap_screw);
+module 2screw_block_M25_stl() 2screw_block(M2p5_cap_screw);
+module 2screw_block_M30_stl() 2screw_block(M3_cap_screw);
+module 2screw_block_M40_stl() 2screw_block(M4_cap_screw);
+//
+//! 1. Lay the blocks out and place an M2 insert in the forward facing hole.
+//! 1. Push them home with a soldering iron with a conical bit heated to 200&deg;C.
+//! When removing the iron it helps to twist it a little anti-clockwise to release it from the thread.
+//! 1. Lay the blocks on each of their other flat side and repeat.
+//
+module 2screw_block_M20_assembly() 2screw_block_assembly(M2_cap_screw);
+
+//
+//! 1. Lay the blocks out and place an M2.5 insert in the forward facing hole.
+//! 1. Push them home with a soldering iron with a conical bit heated to 200&deg;C.
+//! When removing the iron it helps to twist it a little anti-clockwise to release it from the thread.
+//! 1. Lay the blocks on each of their other flat side and repeat.
+//
+module 2screw_block_M25_assembly() 2screw_block_assembly(M2p5_cap_screw);
+
+//
+//! 1. Lay the blocks out and place an M3 insert in the forward facing hole.
+//! 1. Push them home with a soldering iron with a conical bit heated to 200&deg;C.
+//! When removing the iron it helps to twist it a little anti-clockwise to release it from the thread.
+//! 1. Lay the blocks on each of their other flat side and repeat.
+//
+module 2screw_block_M30_assembly() 2screw_block_assembly(M3_cap_screw);
+
+//
+//! 1. Lay the blocks out and place an M4 insert in the forward facing hole.
+//! 1. Push them home with a soldering iron with a conical bit heated to 200&deg;C.
+//! When removing the iron it helps to twist it a little anti-clockwise to release it from the thread.
+//! 1. Lay the blocks on each of their other flat side and repeat.
+//
+module 2screw_block_M40_assembly() 2screw_block_assembly(M4_cap_screw);

printed/pocket_handle.scad

@@ -137,7 +137,7 @@ module pocket_handle_assembly(type) { //! Assembly with fasteners in place
 
     translate_z(f.z + t / 2) hflip() {
         stl_colour(pp1_colour)
-            pocket_handle(type);
+            render() pocket_handle(type);
 
         pocket_handle_hole_positions(type) {
             translate_z(f.z + t)

printed/psu_shroud.scad

@@ -27,6 +27,7 @@ use <../vitamins/insert.scad>
 use <../vitamins/wire.scad>
 use <../vitamins/psu.scad>
 use <../utils/round.scad>
+use <../vitamins/terminal.scad>
 
 wall = 1.8;
 top = 1.5;

printed/ribbon_clamp.scad

@@ -18,7 +18,10 @@
 //
 
 //
-//! Clamp for ribbon cable and polypropylene strip.
+//! Clamp for ribbon cable and polypropylene strip or one or more ribbon cables.
+//!
+//! * When `ways` is a scalar number the slot is sized for one rubbon cable and a PP strip.
+//! * When `ways` is a two element vector the second element indicates the number of cables and the slot is size for just the cables.
 //
 include <../core.scad>
 use <../vitamins/insert.scad>
@@ -34,7 +37,8 @@ function ribbon_clamp_hole_pitch(ways, screw = screw) =
 
 function ribbon_clamp_width(screw = screw) = 2 * (insert_hole_radius(screw_insert(screw)) + wall); //! Width
 function ribbon_clamp_length(ways, screw = screw) = ribbon_clamp_hole_pitch(ways, screw) + ribbon_clamp_width(screw); //! Length given ways
-function ribbon_clamp_height(screw = screw) = ribbon_clamp_screw_depth(screw) + 1; //! Height
+function ribbon_clamp_height(screw = screw, ways = undef) = ribbon_clamp_screw_depth(screw) + 1 +  //! Height
+        (!is_undef(ways) && is_list(ways) ?  (ways[1] - 1) * inch(0.05) : 0);
 
 module ribbon_clamp_hole_positions(ways, screw = screw, side = undef) //! Place children at hole positions
     for(x = is_undef(side) ? [-1, 1] : side)
@@ -45,16 +49,20 @@ module ribbon_clamp_holes(ways, h = 20, screw = screw) //! Drill screw holes
     ribbon_clamp_hole_positions(ways, screw)
         drill(screw_clearance_radius(screw), h);
 
+function str_ways(ways) = is_list(ways) ? str(ways[0], "_", ways[1]) : str(ways);
+function str_screw_d(screw_d) = screw_d != 3 ? str("_", screw_d) : "";
+
 module ribbon_clamp(ways, screw = screw) { //! Generate STL for given number of ways
     screw_d = screw_radius(screw) * 2;
 
     pitch = ribbon_clamp_hole_pitch(ways, screw);
     d = ribbon_clamp_width(screw);
-    h = ribbon_clamp_height(screw);
-    t = round_to_layer(ribbon_clamp_slot_depth() + wall);
+    h = ribbon_clamp_height(screw, ways);
+    slot_d = is_list(ways) ? ways[1] * inch(0.05) : ribbon_clamp_slot_depth();
+    t = round_to_layer(slot_d + wall);
     insert = screw_insert(screw);
 
-    stl(str("ribbon_clamp_", ways, screw_d != 3 ? str("_", screw_d) : ""))
+    stl(str("ribbon_clamp_", str_ways(ways), str_screw_d(screw_d)))
         difference() {
             union() {
                 hull() {
@@ -72,7 +80,7 @@ module ribbon_clamp(ways, screw = screw) { //! Generate STL for given number of
             }
 
             translate_z(h)
-                cube([ribbon_clamp_slot(ways), d + 1, ribbon_clamp_slot_depth() * 2], center = true);
+                cube([ribbon_clamp_slot(ways), d + 1, slot_d * 2], center = true);
 
             ribbon_clamp_hole_positions(ways, screw)
                 translate_z(h)
@@ -83,8 +91,8 @@ module ribbon_clamp(ways, screw = screw) { //! Generate STL for given number of
 
 module ribbon_clamp_assembly(ways, screw = screw)  //! Printed part with inserts in place
 pose([55, 180, 25])
-assembly(let(screw_d = screw_radius(screw) * 2)str("ribbon_clamp_", ways, screw_d != 3 ? str("_", screw_d) : ""), ngb = true) {
-    h = ribbon_clamp_height(screw);
+assembly(let(screw_d = screw_radius(screw) * 2)str("ribbon_clamp_", str_ways(ways), str_screw_d(screw_d)), ngb = true) {
+    h = ribbon_clamp_height(screw, ways);
     insert = screw_insert(screw);
 
     stl_colour(pp1_colour) render()

readme.md

@@ -38,15 +38,15 @@ A list of changes classified as breaking, additions or fixes is maintained in [C
 <tr><td> <a href = "#Components">Components</a> </td><td> <a href = "#Nuts">Nuts</a> </td><td> <a href = "#Springs">Springs</a> </td><td> <a href = "#Knob">Knob</a> </td><td> <a href = "#Rounded_cylinder">Rounded_cylinder</a> </td><td></td></tr>
 <tr><td> <a href = "#DIP">DIP</a> </td><td> <a href = "#O_ring">O_ring</a> </td><td> <a href = "#Stepper_motors">Stepper_motors</a> </td><td> <a href = "#PCB_mount">PCB_mount</a> </td><td> <a href = "#Rounded_polygon">Rounded_polygon</a> </td><td></td></tr>
 <tr><td> <a href = "#D_connectors">D_connectors</a> </td><td> <a href = "#Opengrab">Opengrab</a> </td><td> <a href = "#Swiss_clips">Swiss_clips</a> </td><td> <a href = "#PSU_shroud">PSU_shroud</a> </td><td> <a href = "#Rounded_triangle">Rounded_triangle</a> </td><td></td></tr>
-<tr><td> <a href = "#Displays">Displays</a> </td><td> <a href = "#PCB">PCB</a> </td><td> <a href = "#Toggles">Toggles</a> </td><td> <a href = "#Pocket_handle">Pocket_handle</a> </td><td> <a href = "#Sector">Sector</a> </td><td></td></tr>
-<tr><td> <a href = "#Extrusion_brackets">Extrusion_brackets</a> </td><td> <a href = "#PCBs">PCBs</a> </td><td> <a href = "#Transformers">Transformers</a> </td><td> <a href = "#Press_fit">Press_fit</a> </td><td> <a href = "#Sweep">Sweep</a> </td><td></td></tr>
-<tr><td> <a href = "#Extrusions">Extrusions</a> </td><td> <a href = "#PSUs">PSUs</a> </td><td> <a href = "#Tubings">Tubings</a> </td><td> <a href = "#Printed_box">Printed_box</a> </td><td> <a href = "#Thread">Thread</a> </td><td></td></tr>
-<tr><td> <a href = "#Fans">Fans</a> </td><td> <a href = "#Panel_meters">Panel_meters</a> </td><td> <a href = "#Variacs">Variacs</a> </td><td> <a href = "#Printed_pulleys">Printed_pulleys</a> </td><td> <a href = "#Tube">Tube</a> </td><td></td></tr>
-<tr><td> <a href = "#Fuseholder">Fuseholder</a> </td><td> <a href = "#Pillars">Pillars</a> </td><td> <a href = "#Veroboard">Veroboard</a> </td><td> <a href = "#Ribbon_clamp">Ribbon_clamp</a> </td><td></td><td></td></tr>
-<tr><td> <a href = "#Geared_steppers">Geared_steppers</a> </td><td> <a href = "#Pillow_blocks">Pillow_blocks</a> </td><td> <a href = "#Washers">Washers</a> </td><td> <a href = "#SSR_shroud">SSR_shroud</a> </td><td></td><td></td></tr>
-<tr><td> <a href = "#Green_terminals">Green_terminals</a> </td><td> <a href = "#Pin_headers">Pin_headers</a> </td><td> <a href = "#Wire">Wire</a> </td><td> <a href = "#Screw_knob">Screw_knob</a> </td><td></td><td></td></tr>
-<tr><td> <a href = "#Hot_ends">Hot_ends</a> </td><td> <a href = "#Potentiometers">Potentiometers</a> </td><td> <a href = "#Zipties">Zipties</a> </td><td> <a href = "#Socket_box">Socket_box</a> </td><td></td><td></td></tr>
-<tr><td> <a href = "#Hygrometer">Hygrometer</a> </td><td> <a href = "#Pulleys">Pulleys</a> </td><td></td><td> <a href = "#Strap_handle">Strap_handle</a> </td><td></td><td></td></tr>
+<tr><td> <a href = "#Displays">Displays</a> </td><td> <a href = "#PCB">PCB</a> </td><td> <a href = "#Terminals">Terminals</a> </td><td> <a href = "#Pocket_handle">Pocket_handle</a> </td><td> <a href = "#Sector">Sector</a> </td><td></td></tr>
+<tr><td> <a href = "#Extrusion_brackets">Extrusion_brackets</a> </td><td> <a href = "#PCBs">PCBs</a> </td><td> <a href = "#Toggles">Toggles</a> </td><td> <a href = "#Press_fit">Press_fit</a> </td><td> <a href = "#Sweep">Sweep</a> </td><td></td></tr>
+<tr><td> <a href = "#Extrusions">Extrusions</a> </td><td> <a href = "#PSUs">PSUs</a> </td><td> <a href = "#Transformers">Transformers</a> </td><td> <a href = "#Printed_box">Printed_box</a> </td><td> <a href = "#Thread">Thread</a> </td><td></td></tr>
+<tr><td> <a href = "#Fans">Fans</a> </td><td> <a href = "#Panel_meters">Panel_meters</a> </td><td> <a href = "#Tubings">Tubings</a> </td><td> <a href = "#Printed_pulleys">Printed_pulleys</a> </td><td> <a href = "#Tube">Tube</a> </td><td></td></tr>
+<tr><td> <a href = "#Fuseholder">Fuseholder</a> </td><td> <a href = "#Pillars">Pillars</a> </td><td> <a href = "#Variacs">Variacs</a> </td><td> <a href = "#Ribbon_clamp">Ribbon_clamp</a> </td><td></td><td></td></tr>
+<tr><td> <a href = "#Geared_steppers">Geared_steppers</a> </td><td> <a href = "#Pillow_blocks">Pillow_blocks</a> </td><td> <a href = "#Veroboard">Veroboard</a> </td><td> <a href = "#SSR_shroud">SSR_shroud</a> </td><td></td><td></td></tr>
+<tr><td> <a href = "#Green_terminals">Green_terminals</a> </td><td> <a href = "#Pin_headers">Pin_headers</a> </td><td> <a href = "#Washers">Washers</a> </td><td> <a href = "#Screw_knob">Screw_knob</a> </td><td></td><td></td></tr>
+<tr><td> <a href = "#Hot_ends">Hot_ends</a> </td><td> <a href = "#Potentiometers">Potentiometers</a> </td><td> <a href = "#Wire">Wire</a> </td><td> <a href = "#Socket_box">Socket_box</a> </td><td></td><td></td></tr>
+<tr><td> <a href = "#Hygrometer">Hygrometer</a> </td><td> <a href = "#Pulleys">Pulleys</a> </td><td> <a href = "#Zipties">Zipties</a> </td><td> <a href = "#Strap_handle">Strap_handle</a> </td><td></td><td></td></tr>
 </table>
 
 ---
@@ -149,6 +149,8 @@ Also single bearing balls are modelled as just a silver sphere and a BOM entry.
 | `bb_bore(type)` | Internal diameter |
 | `bb_colour(type)` | Shield colour, "silver" for metal |
 | `bb_diameter(type)` | External diameter |
+| `bb_flange_diameter(type)` | Flange diameter |
+| `bb_flange_width(type)` | Flange width |
 | `bb_hub(type)` | Inner rim thickness guesstimate |
 | `bb_name(type)` | Part code without shield type suffix |
 | `bb_rim(type)` | Outer rim thickness guesstimate |
@@ -170,8 +172,14 @@ Also single bearing balls are modelled as just a silver sphere and a BOM entry.
 |   1 | `ball_bearing(BB6201)` |  Ball bearing 6201-2RS 12mm x 32mm x 10mm |
 |   1 | `ball_bearing(BB624)` |  Ball bearing 624-2RS 4mm x 13mm x 5mm |
 |   1 | `ball_bearing(BB6808)` |  Ball bearing 6808-2RS 40mm x 52mm x 7mm |
+|   1 | `ball_bearing(BBF623)` |  Ball bearing F623-2RS 3mm x 10mm x 4mm |
+|   1 | `ball_bearing(BBF693)` |  Ball bearing F693ZZ 3mm x 8mm x 3mm |
+|   1 | `ball_bearing(BBF695)` |  Ball bearing F695ZZ 5mm x 13mm x 4mm |
+|   1 | `ball_bearing(BBMR63)` |  Ball bearing MR63ZZ 3mm x 6mm x 2.5mm |
+|   1 | `ball_bearing(BBMR83)` |  Ball bearing MR83ZZ 3mm x 8mm x 3mm |
+|   1 | `ball_bearing(BBMR93)` |  Ball bearing MR93ZZ 3mm x 9mm x 4mm |
 |   1 | `ball_bearing(BBSMR95)` |  Ball bearing SMR95ZZ 5mm x 9mm x 2.5mm |
-|   6 | ` bearing_ball(3)` |  Steel ball 3mm |
+|   5 | ` bearing_ball(3)` |  Steel ball 3mm |
 
 
 <a href="#top">Top</a>
@@ -442,6 +450,7 @@ Individual teeth are not drawn, instead they are represented by a lighter colour
 <a name="Blowers"></a>
 ## Blowers
 Models of radial blowers.
+Note that blower_exit() and blower_exit_offset() are for the inside of the exit for square blowers but the outside for spiral blowers.
 
 [vitamins/blowers.scad](vitamins/blowers.scad) Object definitions.
 
@@ -644,6 +653,9 @@ When the sides are constrained then a circular model is more accurate.
 |:--- |:--- |
 | `bezier_cable_length(depth, min_z, pos)` | Calculate a length that will achieve the desired minimum z |
 | `cable_strip_length(depth, travel, extra = 15)` | Calculate circular cable strip length |
+| `ribbon_clamp_slot(ways)` | Width of the slot to accept a ribbon cable |
+| `ribbon_clamp_slot_depth()` | Depth of slot to accept a ribbon cable and a cable strip |
+| `ribbon_ways(ways)` | Allows ribbon clamps to accept multiple cables |
 
 ### Modules
 | Module | Description |
@@ -876,6 +888,7 @@ D-connectors. Can be any number of ways, male or female, solder buckets, PCB mou
 | `d_connector_holes(type)` | Place children at the screw hole positions |
 | `d_pillar()` | Draw a pillar for a D-connector |
 | `d_plug(type, socket = false, pcb = false, idc = false)` | Draw specified D plug, which can be IDC, PCB or plain solder bucket |
+| `d_plug_D(length, width, rad)` | D plug D shape |
 | `d_socket(connector, pcb = false, idc = false)` | Draw specified D socket, which can be IDC, PCB or plain solder bucket |
 
 ![d_connectors](tests/png/d_connectors.png)
@@ -1961,7 +1974,9 @@ UK 13A sockets at the moment.
 ## Microswitches
 Used for limit switches. Currently only the button type is supported as the lever and roller types are less accurate.
 
-The switch is drawn with the button at the nominal operation point. This can be plus or minus `microswitch_op_tol(type)`.
+The origin of the switch is in the center of the body. `microswitch_button_pos()` is the offset to tip of the button at its operating point.
+
+The switch is drawn with the button at the nominal operation point. This actual trigger point can be plus or minus `microswitch_op_tol(type)`.
 
 When the button is released it comes out by a maximum of `microswitch_fp_max(type)` from the nominal operating point.
 
@@ -2542,6 +2557,7 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |   1 | `pcb(ArduinoLeonardo)` |  Arduino Leonardo |
 |   1 | `pcb(ArduinoNano)` |  Arduino Nano |
 |   1 | `pcb(ArduinoUno3)` |  Arduino Uno R3 |
+|   1 | `pcb(BTT_RELAY_V1_2)` |  BigTreeTech Relay Module v1.2 |
 |   1 | `pcb(BTT_SKR_E3_TURBO)` |  BigTreeTech SKR E3 Turbo |
 |   1 | `pcb(BTT_SKR_MINI_E3_V2_0)` |  BigTreeTech SKR Mini E3 v2.0 |
 |   1 | `pcb(BTT_SKR_V1_4_TURBO)` |  BigTreeTech SKR v1.4 Turbo |
@@ -2566,7 +2582,7 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |   1 | `molex_254(3)` |  Molex KK header 3 way - not shown |
 |  20 | `nut(M2_nut, nyloc = true)` |  Nut M2 x 1.6mm nyloc |
 |  30 | `nut(M2p5_nut, nyloc = true)` |  Nut M2.5 x 2.2mm nyloc |
-|  28 | `nut(M3_nut, nyloc = true)` |  Nut M3 x 2.4mm nyloc |
+|  32 | `nut(M3_nut, nyloc = true)` |  Nut M3 x 2.4mm nyloc |
 |   8 | `nut(M4_nut, nyloc = true)` |  Nut M4 x 3.2mm nyloc |
 |   1 | `pcb(PI_IO)` |  PI_IO V2 - not shown |
 |   1 | `pcb(PSU12V1A)` |  PSU 12V 1A - not shown |
@@ -2590,8 +2606,8 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |   4 | `screw(M2p5_pan_screw, 20)` |  Screw M2.5 pan x 20mm |
 |   8 | `screw(M2p5_pan_screw, 25)` |  Screw M2.5 pan x 25mm |
 |  10 | `screw(M3_cap_screw, 16)` |  Screw M3 cap x 16mm |
-|  14 | `screw(M3_cap_screw, 30)` |  Screw M3 cap x 30mm |
-|   4 | `screw(M3_cap_screw, 35)` |  Screw M3 cap x 35mm |
+|  13 | `screw(M3_cap_screw, 30)` |  Screw M3 cap x 30mm |
+|   9 | `screw(M3_cap_screw, 35)` |  Screw M3 cap x 35mm |
 |   8 | `screw(M4_cap_screw, 35)` |  Screw M4 cap x 35mm |
 |   1 | `pcb(XIAO)` |  Seeeduino XIAO |
 |   1 | `pcb(TP4056)` |  TP4056 Li-lon Battery charger module |
@@ -2601,7 +2617,7 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |   1 | `pcb(WD2002SJ)` |  WD2002SJ Buck Boost DC-DC converter |
 |  20 | `washer(M2_washer)` |  Washer  M2 x 5mm x 0.3mm |
 |  30 | `washer(M2p5_washer)` |  Washer  M2.5 x 5.9mm x 0.5mm |
-|  28 | `washer(M3_washer)` |  Washer  M3 x 7mm x 0.5mm |
+|  32 | `washer(M3_washer)` |  Washer  M3 x 7mm x 0.5mm |
 |   8 | `washer(M4_washer)` |  Washer  M4 x 9mm x 0.8mm |
 |   1 | `pcb(ZC_A0591)` |  ZC-A0591 ULN2003 driver PCB |
 
@@ -2621,13 +2637,14 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |   2 | pcb_spacer2550.stl |
 |   4 | pcb_spacer2580.stl |
 |   4 | pcb_spacer30160.stl |
-|   5 | pcb_spacer30190.stl |
+|   4 | pcb_spacer30190.stl |
 |   5 | pcb_spacer30200.stl |
-|   4 | pcb_spacer30210.stl |
+|   5 | pcb_spacer30210.stl |
+|   4 | pcb_spacer30220.stl |
 |   4 | pcb_spacer3050.stl |
 |   6 | pcb_spacer3060.stl |
-|   4 | pcb_spacer40220.stl |
 |   4 | pcb_spacer40230.stl |
+|   4 | pcb_spacer40240.stl |
 
 
 <a href="#top">Top</a>
@@ -2670,6 +2687,7 @@ Threaded pillars. Each end can be male or female.
 | ---:|:--- |:---|
 |   1 | `pillar(M3x13_hex_pillar)` |  Pillar hex M/F M3x13 |
 |   1 | `pillar(M3x20_hex_pillar)` |  Pillar hex M/F M3x20 |
+|   1 | `pillar(M3x6_hex_pillar)` |  Pillar hex M/F M3x6 |
 |   1 | `pillar(M3x10_nylon_hex_pillar)` |  Pillar hex nylon M/F M3x10 |
 |   1 | `pillar(M3x20_nylon_hex_pillar)` |  Pillar hex nylon M/F M3x20 |
 |   1 | `pillar(M2x16_brass_pillar)` |  Pillar nurled F/M M2x16 |
@@ -2878,24 +2896,18 @@ Face order is bottom, top, left, right, front, back.
 | `psu_left_bay(type)` | Bay for terminals |
 | `psu_length(type)` | Length |
 | `psu_name(type)` | The part name |
+| `psu_pcb(type)` | The PCB |
 | `psu_right_bay(type)` | Bay for heatsink |
 | `psu_screw(type)` | Screw type |
 | `psu_screw_hole_radius(type)` | Clearance hole for screw, bigger than normal on ATX |
 | `psu_terminals(type)` | How many terminals and the y offset from the back |
 | `psu_width(type)` | Width |
-| `terminal_block_depth(type)` | Total depth |
-| `terminal_block_depth2(type)` | Depth of contact well |
-| `terminal_block_divider(type)` | Width of the dividers |
-| `terminal_block_height(type)` | Height of the dividers |
-| `terminal_block_height2(type)` | Height under the contacts |
-| `terminal_block_pitch(type)` | Pitch between screws |
 
 ### Functions
 | Function | Description |
 |:--- |:--- |
 | `psu_face_transform(type, face)` | Returns a transformation matrix to get to the specified face |
 | `psu_size(type)` | Size |
-| `terminal_block_length(type, ways)` | Total length of terminal block |
 
 ### Modules
 | Module | Description |
@@ -2903,7 +2915,6 @@ Face order is bottom, top, left, right, front, back.
 | `atx_psu_cutout(type, face = f_front)` | Cut out for the rear of an ATX, which is actually f_front! |
 | `psu(type)` | Draw a power supply |
 | `psu_screw_positions(type, face = undef)` | Position children at the screw positions on the preferred mounting face, which can be overridden. |
-| `terminal_block(type, ways)` | Draw a power supply terminal block |
 
 ![psus](tests/png/psus.png)
 
@@ -2914,6 +2925,8 @@ Face order is bottom, top, left, right, front, back.
 |   1 | `psu(ATX500)` |  PSU ATX500 |
 |   1 | `psu(ATX300)` |  PSU FSP300-60GHX |
 |   1 | `psu(KY240W)` |  PSU KY-240W-12-L - not shown |
+|   1 | `psu(NG_CB_200W_24V)` |  PSU NIUGUY CB-200W-24V |
+|   1 | `psu(NG_CB_500W_24V)` |  PSU NIUGUY CB-500W-24V |
 |   1 | `psu(PD_150_12)` |  PSU PD-150-12 |
 |   1 | `psu(S_250_48)` |  PSU S-250-48 |
 |   1 | `psu(S_300_12)` |  PSU S-300-12 |
@@ -3863,7 +3876,7 @@ NEMA stepper motor model.
 | `NEMA(type, shaft_angle = 0, jst_connector = false)` | Draw specified NEMA stepper motor |
 | `NEMA_outline(type)` | 2D outline |
 | `NEMA_screw_positions(type, n = 4)` | Positions children at the screw holes |
-| `NEMA_screws(type, screw, n = 4, screw_length = 8, earth = undef)` | Place screws and optional earth tag |
+| `NEMA_screws(type, screw, n = 4, screw_length = 8, earth = undef, earth_rot = undef)` | Place screws and optional earth tag |
 
 ![stepper_motors](tests/png/stepper_motors.png)
 
@@ -3933,6 +3946,40 @@ Should be reasonably accurate if not close to fully open.
 |   2 | `swiss_clip(UKPFS1008_10)` |  Swiss picture clip UKPFS1008_10 11mm |
 
 
+<a href="#top">Top</a>
+
+---
+<a name="Terminals"></a>
+## Terminals
+Terminal blocks for power supplies and PCBs.
+
+[vitamins/terminal.scad](vitamins/terminal.scad) Implementation.
+
+[tests/terminals.scad](tests/terminals.scad) Code for this example.
+
+### Properties
+| Function | Description |
+|:--- |:--- |
+| `terminal_block_depth(type)` | Total depth |
+| `terminal_block_depth2(type)` | Depth of contact well |
+| `terminal_block_divider(type)` | Width of the dividers |
+| `terminal_block_height(type)` | Height of the dividers |
+| `terminal_block_height2(type)` | Height under the contacts |
+| `terminal_block_pitch(type)` | Pitch between screws |
+
+### Functions
+| Function | Description |
+|:--- |:--- |
+| `terminal_block_length(type, ways)` | Total length of terminal block |
+
+### Modules
+| Module | Description |
+|:--- |:--- |
+| `terminal_block(type, ways)` | Draw a power supply terminal block |
+
+![terminals](tests/png/terminals.png)
+
+
 <a href="#top">Top</a>
 
 ---
@@ -4069,6 +4116,7 @@ Tubing and sleeving. The internal diameter can be forced to stretch it over some
 ### Functions
 | Function | Description |
 |:--- |:--- |
+| `tubing_ir(type)` | Inside radius |
 | `tubing_or(type)` | Outside radius |
 
 ### Modules
@@ -4331,8 +4379,8 @@ Just a BOM entry at the moment and cable bundle size functions for holes, plus c
 | `cable_radius(cable)` | Radius of a bundle of wires, see <http://mathworld.wolfram.com/CirclePacking.html>. |
 | `cable_width(cable)` | Width in flat clip |
 | `cable_wire_size(cable)` | Size of each wire in a bundle |
-| `cable_wires(cable)` | Number of wires in a bindle |
-| `wire_hole_radius(cable)` | Radius of a hole to accept a bundle of wires |
+| `cable_wires(cable)` | Number of wires in a bundle |
+| `wire_hole_radius(cable)` | Radius of a hole to accept a bundle of wires, rounded up to standard metric drill size |
 
 ### Modules
 | Module | Description |
@@ -4413,6 +4461,10 @@ screw type and printed part wall thickness. This diagram shows how the various d
 
 Normally the side sheets are the same type but they can be overridden individually as long as the substitute has the same thickness.
 
+A box can have an optional name to allow more than one in the same project.
+
+The top bezel can have an optional child, which is subtracted to allow modification.
+
 [printed/box.scad](printed/box.scad) Implementation.
 
 [tests/box.scad](tests/box.scad) Code for this example.
@@ -4424,6 +4476,7 @@ Normally the side sheets are the same type but they can be overridden individual
 | `box_depth(type)` | Internal depth |
 | `box_feet(type)` | True to enable feet on the bottom bezel |
 | `box_height(type)` | Internal height |
+| `box_name(type)` | Name for projects with more than one box |
 | `box_screw(type)` | Screw type to be used at the corners |
 | `box_sheets(type)` | Sheet type used for the sides |
 | `box_shelf_screw(type)` | Screw type to hold a shelf |
@@ -4434,9 +4487,10 @@ Normally the side sheets are the same type but they can be overridden individual
 ### Functions
 | Function | Description |
 |:--- |:--- |
-| `box(screw, wall, sheets, top_sheet, base_sheet, size, feet = false, shelf_screw = undef)` | Construct a property list for a box. |
+| `box(screw, wall, sheets, top_sheet, base_sheet, size, feet = false, shelf_screw = undef, name = "box")` | Construct a property list for a box. |
 | `box_bezel_height(type, bottom)` | Bezel height for top or bottom |
 | `box_corner_gap(type)` | Gap between box_sheets at the corners to connect inside and outside profiles |
+| `box_hole_inset(type)` | Screw inset from the corner of the internal dimensions |
 | `box_inset(type)` | How much the bezel intrudes on the specified width and length, away from the corners |
 | `box_intrusion(type)` | Corner profile intrusion |
 | `box_margin(type)` | How much the bezel intrudes on the specified height |
@@ -4525,7 +4579,8 @@ maximum spacing.
  * An optional list of fixing blocks to be omitted can be given.
  * Star washers can be omitted by setting the 11th parameter to false.
 
-Uses [fixing blocks](#fixing_block) and [corner blocks](#corner_block).
+Uses [fixing blocks](#fixing_block) and [corner blocks](#corner_block) by default. Setting `thin_blocks` uses 2screw_blocks instead of
+fixing_blocks along the sides.
 
 [printed/butt_box.scad](printed/butt_box.scad) Implementation.
 
@@ -4542,14 +4597,15 @@ Uses [fixing blocks](#fixing_block) and [corner blocks](#corner_block).
 | `bbox_sheets(type)` | Sheet type for the sides |
 | `bbox_skip_blocks(type)` | List of fixing blocks to skip, used to allow a hinged panel for example |
 | `bbox_span(type)` | Maximum span between fixing blocks |
+| `bbox_star_washers(type)` | Set to false to remove star washers. |
+| `bbox_thin_blocks(type)` | Set for 2 screw blocks instead of three hole fixing blocks. |
 | `bbox_top_sheet(type)` | Sheet type for the top |
 | `bbox_width(type)` | Internal width |
-| `star_washers(type)` | Set to false to remove star washers. |
 
 ### Functions
 | Function | Description |
 |:--- |:--- |
-| `bbox(screw, sheets, base_sheet, top_sheet, span, size, name = "bbox", skip_blocks = [], star_washers = true)` | Construct the property list for a butt_box |
+| `bbox(screw, sheets, base_sheet, top_sheet, span, size, name = "bbox", skip_blocks = [], star_washers = true, thin_blocks = false)` | Construct the property list for a butt_box |
 | `bbox_area(type)` | Internal surface area in m^2 |
 | `bbox_volume(type)` | Internal volume in litres |
 
@@ -4576,23 +4632,23 @@ Uses [fixing blocks](#fixing_block) and [corner blocks](#corner_block).
 ### Vitamins
 | Qty | Module call | BOM entry |
 | ---:|:--- |:---|
-|  48 | `insert(F1BM3)` |  Heatfit insert M3 |
-|  36 | `screw(M3_dome_screw, 10)` |  Screw M3 dome x 10mm |
+|  60 | `insert(F1BM3)` |  Heatfit insert M3 |
+|  44 | `screw(M3_dome_screw, 10)` |  Screw M3 dome x 10mm |
 |   4 | `screw(M3_dome_screw, 12)` |  Screw M3 dome x 12mm |
-|   8 | `screw(M3_dome_screw, 16)` |  Screw M3 dome x 16mm |
-|   2 | `sheet(DiBond, 303, 126)` |  Sheet DiBond 303mm x 126mm x 3mm |
-|   1 | `sheet(DiBond, 400, 126)` |  Sheet DiBond 400mm x 126mm x 3mm |
-|   1 | `sheet(DiBond6, 400, 300, 1)` |  Sheet DiBond 400mm x 300mm x 6mm |
-|   1 | `sheet(DiBond, 406, 129)` |  Sheet DiBond 406mm x 129mm x 3mm |
-|   1 | `sheet(PMMA3, 406, 303)` |  Sheet acrylic 406mm x 303mm x 3mm |
-|  48 | `washer(M3_washer)` |  Washer  M3 x 7mm x 0.5mm |
-|  48 | `star_washer(M3_washer)` |  Washer star M3 x 0.5mm |
+|  12 | `screw(M3_dome_screw, 16)` |  Screw M3 dome x 16mm |
+|   2 | `sheet(DiBond, 203, 126)` |  Sheet DiBond 203mm x 126mm x 3mm |
+|   1 | `sheet(DiBond, 300, 126)` |  Sheet DiBond 300mm x 126mm x 3mm |
+|   1 | `sheet(DiBond6, 300, 200, 1)` |  Sheet DiBond 300mm x 200mm x 6mm |
+|   1 | `sheet(DiBond, 306, 129)` |  Sheet DiBond 306mm x 129mm x 3mm |
+|   1 | `sheet(PMMA3, 306, 203)` |  Sheet acrylic 306mm x 203mm x 3mm |
+|  60 | `washer(M3_washer)` |  Washer  M3 x 7mm x 0.5mm |
+|  60 | `star_washer(M3_washer)` |  Washer star M3 x 0.5mm |
 
 ### Printed
 | Qty | Filename |
 | ---:|:--- |
 |   8 | corner_block_M30.stl |
-|   8 | fixing_block_M30.stl |
+|  12 | fixing_block_M30.stl |
 
 ### Routed
 | Qty | Filename |
@@ -4609,7 +4665,7 @@ Uses [fixing blocks](#fixing_block) and [corner blocks](#corner_block).
 | ---:|:--- |
 |   1 | bbox_assembly |
 |   8 | corner_block_M30_assembly |
-|   8 | fixing_block_M30_assembly |
+|  12 | fixing_block_M30_assembly |
 
 
 <a href="#top">Top</a>
@@ -4624,6 +4680,12 @@ of conductive panels, an extra layer of insulation.
 
 [tests/cable_grommets.scad](tests/cable_grommets.scad) Code for this example.
 
+### Functions
+| Function | Description |
+|:--- |:--- |
+| `mouse_grommet_length(r)` | Length of grommet given r |
+| `mouse_grommet_offset(r)` | Offset of the wire from the ground |
+
 ### Modules
 | Module | Description |
 |:--- |:--- |
@@ -4640,7 +4702,7 @@ of conductive panels, an extra layer of insulation.
 ### Printed
 | Qty | Filename |
 | ---:|:--- |
-|   1 | mouse_grommet_50_3.stl |
+|   1 | mouse_grommet_100_3.stl |
 |   1 | ribbon_grommet_20_3.stl |
 |   1 | round_grommet_bottom_60.stl |
 |   1 | round_grommet_top_60_3.stl |
@@ -4761,6 +4823,9 @@ This allows the block and one set of fasteners to be on one assembly and the oth
 
 Star washers can be omitted by setting `star_washers` to false.
 
+A 2screw_block is a thinner version with two screws and two mating surfaces. It can be used as an alternative to fixing blocks when
+high lateral rigity is not required.
+
 [printed/corner_block.scad](printed/corner_block.scad) Implementation.
 
 [tests/corner_block.scad](tests/corner_block.scad) Code for this example.
@@ -4768,6 +4833,10 @@ Star washers can be omitted by setting `star_washers` to false.
 ### Functions
 | Function | Description |
 |:--- |:--- |
+| `2screw_block_h_hole(screw = def_screw)` | Transform to front hole |
+| `2screw_block_holes(screw)` | List of transforms to both holes |
+| `2screw_block_v_hole(screw = def_screw)` | Transform to bottom hole |
+| `2screw_block_width(screw = def_screw)` | 2 screw block width is narrower, height and depth are as corner_block |
 | `corner_block_h_holes(screw = def_screw)` | List of transforms to side holes |
 | `corner_block_hole_offset(screw = def_screw)` | Hole offset from the edge |
 | `corner_block_holes(screw)` | List of transforms to all holes |
@@ -4778,11 +4847,17 @@ Star washers can be omitted by setting `star_washers` to false.
 ### Modules
 | Module | Description |
 |:--- |:--- |
+| `2screw_block(screw = def_screw, name = false)` | Generate the STL for a printed 2screw block |
+| `2screw_block_assembly(screw = def_screw, name = false)` | The printed block with inserts |
+| `2screw_block_h_hole(screw = def_screw)` | Place children at the front screw hole |
+| `2screw_block_holes(screw = def_screw)` | Place children at both screw holes |
+| `2screw_block_v_hole(screw = def_screw)` | Place children at the bottom screw hole |
 | `corner_block(screw = def_screw, name = false)` | Generate the STL for a printed corner block |
 | `corner_block_assembly(screw = def_screw, name = false)` | The printed block with inserts |
 | `corner_block_h_holes(screw = def_screw, index = undef)` | Place children at the side screw holes |
 | `corner_block_holes(screw = def_screw)` | Place children at all the holes |
 | `corner_block_v_hole(screw = def_screw)` | Place children at the bottom screw hole |
+| `fastened_2screw_block_assembly(thickness, screw = def_screw, thickness_below = undef, name = false, show_block = true, star_washers = true)` | Printed block with fasteners |
 | `fastened_corner_block_assembly(thickness, screw = def_screw, thickness_below = undef, thickness_side2 = undef, name = false, show_block = true, star_washers = true)` | Printed block with all fasteners |
 
 ![corner_block](tests/png/corner_block.png)
@@ -4790,26 +4865,30 @@ Star washers can be omitted by setting `star_washers` to false.
 ### Vitamins
 | Qty | Module call | BOM entry |
 | ---:|:--- |:---|
-|   3 | `insert(F1BM2)` |  Heatfit insert M2 |
-|   3 | `insert(F1BM2p5)` |  Heatfit insert M2.5 |
-|   3 | `insert(F1BM3)` |  Heatfit insert M3 |
-|   3 | `insert(F1BM4)` |  Heatfit insert M4 |
-|   3 | `screw(M2_cap_screw, 8)` |  Screw M2 cap x  8mm |
-|   3 | `screw(M2p5_pan_screw, 10)` |  Screw M2.5 pan x 10mm |
-|   3 | `screw(M3_dome_screw, 10)` |  Screw M3 dome x 10mm |
-|   3 | `screw(M4_dome_screw, 12)` |  Screw M4 dome x 12mm |
-|   3 | `washer(M2_washer)` |  Washer  M2 x 5mm x 0.3mm |
-|   3 | `washer(M2p5_washer)` |  Washer  M2.5 x 5.9mm x 0.5mm |
-|   3 | `washer(M3_washer)` |  Washer  M3 x 7mm x 0.5mm |
-|   3 | `washer(M4_washer)` |  Washer  M4 x 9mm x 0.8mm |
-|   3 | `star_washer(M2_washer)` |  Washer star M2 x 0.3mm |
-|   3 | `star_washer(M2p5_washer)` |  Washer star M2.5 x 0.5mm |
-|   3 | `star_washer(M3_washer)` |  Washer star M3 x 0.5mm |
-|   3 | `star_washer(M4_washer)` |  Washer star M4 x 0.8mm |
+|   5 | `insert(F1BM2)` |  Heatfit insert M2 |
+|   5 | `insert(F1BM2p5)` |  Heatfit insert M2.5 |
+|   5 | `insert(F1BM3)` |  Heatfit insert M3 |
+|   5 | `insert(F1BM4)` |  Heatfit insert M4 |
+|   5 | `screw(M2_cap_screw, 8)` |  Screw M2 cap x  8mm |
+|   5 | `screw(M2p5_pan_screw, 10)` |  Screw M2.5 pan x 10mm |
+|   5 | `screw(M3_dome_screw, 10)` |  Screw M3 dome x 10mm |
+|   5 | `screw(M4_dome_screw, 12)` |  Screw M4 dome x 12mm |
+|   5 | `washer(M2_washer)` |  Washer  M2 x 5mm x 0.3mm |
+|   5 | `washer(M2p5_washer)` |  Washer  M2.5 x 5.9mm x 0.5mm |
+|   5 | `washer(M3_washer)` |  Washer  M3 x 7mm x 0.5mm |
+|   5 | `washer(M4_washer)` |  Washer  M4 x 9mm x 0.8mm |
+|   5 | `star_washer(M2_washer)` |  Washer star M2 x 0.3mm |
+|   5 | `star_washer(M2p5_washer)` |  Washer star M2.5 x 0.5mm |
+|   5 | `star_washer(M3_washer)` |  Washer star M3 x 0.5mm |
+|   5 | `star_washer(M4_washer)` |  Washer star M4 x 0.8mm |
 
 ### Printed
 | Qty | Filename |
 | ---:|:--- |
+|   1 | 2screw_block_M20.stl |
+|   1 | 2screw_block_M25.stl |
+|   1 | 2screw_block_M30.stl |
+|   1 | 2screw_block_M40.stl |
 |   1 | corner_block_M20.stl |
 |   1 | corner_block_M25.stl |
 |   1 | corner_block_M30.stl |
@@ -4818,6 +4897,10 @@ Star washers can be omitted by setting `star_washers` to false.
 ### Assemblies
 | Qty | Name |
 | ---:|:--- |
+|   1 | 2screw_block_M20_assembly |
+|   1 | 2screw_block_M25_assembly |
+|   1 | 2screw_block_M30_assembly |
+|   1 | 2screw_block_M40_assembly |
 |   1 | corner_block_M20_assembly |
 |   1 | corner_block_M25_assembly |
 |   1 | corner_block_M30_assembly |
@@ -5696,7 +5779,10 @@ The stl and assembly must be given a name and parameterless wrappers for the stl
 ---
 <a name="Ribbon_clamp"></a>
 ## Ribbon_clamp
-Clamp for ribbon cable and polypropylene strip.
+Clamp for ribbon cable and polypropylene strip or one or more ribbon cables.
+
+* When `ways` is a scalar number the slot is sized for one rubbon cable and a PP strip.
+* When `ways` is a two element vector the second element indicates the number of cables and the slot is size for just the cables.
 
 [printed/ribbon_clamp.scad](printed/ribbon_clamp.scad) Implementation.
 
@@ -5705,7 +5791,7 @@ Clamp for ribbon cable and polypropylene strip.
 ### Functions
 | Function | Description |
 |:--- |:--- |
-| `ribbon_clamp_height(screw = screw)` | Height |
+| `ribbon_clamp_height(screw = screw, ways = undef)` | Height |
 | `ribbon_clamp_length(ways, screw = screw)` | Length given ways |
 | `ribbon_clamp_width(screw = screw)` | Width |
 
@@ -6479,6 +6565,12 @@ Subsequent rotations use the minimum rotation method.
 The path can be open or closed. If closed sweep ensures that the start and end have the same rotation to line up.
 An additional twist around the path can be specified. If the path is closed this should be a multiple of 360.
 
+`rounded_path()` can be used to generate a path of lines connected by arcs, useful for wire runs, etc.
+The vertices specify where the the path would be without any rounding.
+Each vertex, apart from the first and the last, has an associated radius and the path shortcuts the vertex with an arc specified by the radius.
+
+`spiral_paths()` makes a list of new paths that spiral around a given path. It can be used to make twisted wires that follow a rounded_path, for example.
+
 [utils/sweep.scad](utils/sweep.scad) Implementation.
 
 [tests/sweep.scad](tests/sweep.scad) Code for this example.
@@ -6494,12 +6586,17 @@ An additional twist around the path can be specified. If the path is closed this
 | `helical_twist_per_segment(r, pitch, sides)` | Calculate the twist around Z that rotate_from_to() introduces |
 | `path_length(path, i = 0, length = 0)` | Calculated the length along a path |
 | `rectangle_points(w, h)` | Generate the points of a rectangle |
+| `rounded_path(path)` | Convert a rounded_path, consisting of a start coordinate, vertex / radius pairs and then an end coordinate, to a path of points for sweep. |
+| `rounded_path_vertices(path)` | Show the unrounded version of a rounded_path for debug |
+| `segmented_path(path, min_segment)` | Add points to a path to enforce a minimum segment length |
 | `skin_faces(points, npoints, facets, loop, offset = 0)` | Create the mesh for the swept volume without end caps |
+| `spiral_paths(path, n, r, twists, start_angle)` | Create a new paths which sprial around the given path. Use for making twisted cables |
 | `sweep(path, profile, loop = false, twist = 0)` | Generate the point list and face list of the swept volume |
 
 ### Modules
 | Module | Description |
 |:--- |:--- |
+| `show_path(path)` | Show a path using a chain of hulls for debugging, duplicate points are highlighted. |
 | `sweep(path, profile, loop = false, twist = 0, convexity = 1)` | Draw a polyhedron that is the swept volume |
 
 ![sweep](tests/png/sweep.png)

tests/PSUs.scad

@@ -30,9 +30,10 @@ module psus()
     rotate(atx_psu(p) ? 0 : 90) {
         psu(p);
 
-        psu_screw_positions(p)
-            translate_z(3)
-                screw_and_washer(psu_screw(p), 8);
+        if (psu_screw(p))
+            psu_screw_positions(p)
+                translate_z(3)
+                    screw_and_washer(psu_screw(p), 8);
 
         if(show_cutout && atx_psu(p))
             #atx_psu_cutout(p);

tests/ball_bearings.scad

@@ -21,10 +21,23 @@ use <../utils/layout.scad>
 
 include <../vitamins/ball_bearings.scad>
 
-module ball_bearings()
-    layout([for(b = ball_bearings) bb_diameter(b)])
-        ball_bearing(ball_bearings[$i])
-            bearing_ball(3);
+
+module do_bearings(list)
+    layout([for(b = list) bb_diameter(b)])
+        ball_bearing(list[$i])
+            if (bb_width(list[$i]) >= 5)
+                bearing_ball(3);
+
+module ball_bearings() {
+    small_bearings = [for(b = ball_bearings) if(bb_diameter(b) < 12) b];
+    big_bearings = [for(b = ball_bearings) if(!in(small_bearings, b)) b];
+
+    translate([0, 0])
+        do_bearings(big_bearings);
+
+    translate([0, -20])
+        do_bearings(small_bearings);
+}
 
 if($preview)
     ball_bearings();

tests/butt_box.scad

@@ -25,7 +25,7 @@ include <../printed/butt_box.scad>
 
 $explode = 0;
 
-box = bbox(screw = M3_dome_screw, sheets = DiBond, base_sheet = DiBond6, top_sheet = PMMA3, span = 250, size = [400, 300, 120]);
+box = bbox(screw = M3_dome_screw, sheets = DiBond, base_sheet = DiBond6, top_sheet = PMMA3, span = 150, size = [300, 200, 120]);
 
 module bbox_assembly() _bbox_assembly(box);
 

tests/corner_block.scad

@@ -22,11 +22,18 @@ use <../printed/corner_block.scad>
 screws = [M2_cap_screw, M2p5_pan_screw, M3_dome_screw, M4_dome_screw];
 
 module do_corner_block(screw)
-    if($preview)
+    if($preview) {
         fastened_corner_block_assembly(3, screw = screw);
-    else
+
+        translate([0, 30])
+            fastened_2screw_block_assembly(3, screw = screw);
+    }
+    else {
         corner_block(screw);
 
+        translate([0, 30])
+            2screw_block(screw);
+    }
 module corner_blocks()
     for(i = [0 : len(screws) - 1])
         translate([i * 30, 0])

tests/sweep.scad

@@ -32,22 +32,33 @@ loop_y = transform_points(loop, rotate([0, -90, $t * 360]));
 
 loop_z = transform_points(loop, rotate([$t * 360, 0, 0]));
 
-sweep(loop_z, L_points, loop = true);
+color("yellow") {
+    sweep(loop_z, L_points, loop = true);
 
-sweep(loop_x, L_points, loop = true);
-
-sweep(loop_y, L_points, loop = true);
+    sweep(loop_x, L_points, loop = true);
 
+    sweep(loop_y, L_points, loop = true);
+}
 
 knot = [ for(i=[0:.2:359])
          [ (19*cos(3*i) + 40)*cos(2*i),
            (19*cos(3*i) + 40)*sin(2*i),
             19*sin(3*i) ] ];
 
-sweep(knot, L_points, loop = true);
+color("red") sweep(knot, L_points, loop = true);
 
 p = transform_points([[0,0,0], [20,0,5], [10,30,4], [0,0,0], [0,0,20]], scale(10));
 n = 100;
 path = bezier_path(p, n);
 
-rotate(45) sweep(path, circle_points(5, $fn = 64));
+color("blue") rotate(45) sweep(path, circle_points(5, $fn = 64));
+
+vertices = [[-170, 0, 0], [-170, 170, 0], 10, [-170, 170, 30], 20, [-50, 170, 31], 10, [-130, 100, 40]];
+rounded_path = rounded_path(vertices);
+
+show_path(rounded_path_vertices(vertices));
+
+paths = spiral_paths(rounded_path, 2, 1.5, 15, 0);
+for(i = [0 : len(paths) - 1])
+    color(["red", "green"][i])
+        sweep(paths[i],  circle_points(1.5, $fn = 64));

tests/terminals.scad

@@ -0,0 +1,28 @@
+//
+// NopSCADlib Copyright Chris Palmer 2018
+// nop.head@gmail.com
+// hydraraptor.blogspot.com
+//
+// This file is part of NopSCADlib.
+//
+// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
+// GNU General Public License as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+//
+// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+// See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with NopSCADlib.
+// If not, see <https://www.gnu.org/licenses/>.
+//
+include <../utils/core/core.scad>
+
+use<../vitamins/terminal.scad>
+
+mw_terminals = [9.525, 1.5, 15, 17.8, 7, 15];
+
+module terminals()
+    terminal_block(mw_terminals, 10);
+
+terminals();

utils/core/teardrops.scad

@@ -34,15 +34,18 @@ module teardrop(h, r, center = true, truncate = true, chamfer = 0, chamfer_both_
                 mirror([side, 0, 0])
                     intersection() {
                         hull()
-                        translate([offset, 0]) {
-                            circle4n(R);
+                            translate([offset, 0]) {
+                                circle4n(R);
 
-                            if(truncate)
-                                translate([0, R / 2])
-                                    square([2 * R * (sqrt(2) - 1), R], center = true);
-                            else
-                                polygon([[0, 0], [eps, 0], [0, R * sqrt(2)]]);
-                        }
+                                if (teardrop_angle > 0) {
+                                    x = R * tan(teardrop_angle / 2);
+                                    if(truncate)
+                                        translate([0, R / 2])
+                                            square([2 * x, R], center = true);
+                                    else
+                                        polygon([[0, 0], [eps, 0], [0, R + x * tan(min(teardrop_angle, 90 - eps))]]);
+                                }
+                            }
                         translate([0, -2 * R])
                             square([R, 4 * R]);
                     }

utils/maths.scad

@@ -103,11 +103,11 @@ function reverse(v) = let(n = len(v) - 1) n < 0 ? [] : [for(i = [0 : n]) v[n - i
 
 function angle_between(v1, v2) = acos(v1 * v2 / (norm(v1) * norm(v2))); //! Return the angle between two vectors
 
-// https://www.gregslabaugh.net/publications/euler.pdf
+// http://eecs.qmul.ac.uk/~gslabaugh/publications/euler.pdf
 function euler(R) = let(ay = asin(-R[2][0]), cy = cos(ay)) //! Convert a rotation matrix to a Euler rotation vector.
     cy ? [ atan2(R[2][1] / cy, R[2][2] / cy), ay, atan2(R[1][0] / cy, R[0][0] / cy) ]
-       : R[2][0] < 0 ? [atan2( R[0][1],  R[0][2]),  180, 0]
-                     : [atan2(-R[0][1], -R[0][2]), -180, 0];
+       : R[2][0] < 0 ? [atan2( R[0][1],  R[0][2]),  90, 0]
+                     : [atan2(-R[0][1], -R[0][2]), -90, 0];
 
 module position_children(list, t) //! Position children if they are on the Z = 0 plane when transformed by t
     for(p = list)

utils/sweep.scad

@@ -25,6 +25,12 @@
 //!
 //! The path can be open or closed. If closed sweep ensures that the start and end have the same rotation to line up.
 //! An additional twist around the path can be specified. If the path is closed this should be a multiple of 360.
+//!
+//! `rounded_path()` can be used to generate a path of lines connected by arcs, useful for wire runs, etc.
+//! The vertices specify where the the path would be without any rounding.
+//! Each vertex, apart from the first and the last, has an associated radius and the path shortcuts the vertex with an arc specified by the radius.
+//!
+//! `spiral_paths()` makes a list of new paths that spiral around a given path. It can be used to make twisted wires that follow a rounded_path, for example.
 //
 include <../utils/core/core.scad>
 
@@ -103,18 +109,19 @@ function helical_twist_per_segment(r, pitch, sides) = //! Calculate the twist ar
        ) step_angle * sin(slope);                   // angle tangent should rotate around z projected onto axis rotate_from_to() uses
 
 //
-// Generate all the surface points of the swept volume.
+// Generate all the transforms for the profile of the swept volume.
 //
-function skin_points(profile, path, loop, twist = 0) =
+function sweep_transforms(path, loop = false, twist = 0) =
     let(len = len(path),
         last = len - 1,
 
-        profile4 = [for(p = profile) [p.x, p.y, p.z, 1]],
-
         tangents = [tangent(path, loop ? last : 0, 0, 1),
                     for(i = [1 : last - 1]) tangent(path, i - 1, i, i + 1),
                     tangent(path, last - 1, last, loop ? 0 : last)],
 
+        lengths = [for(i = 0, t = 0; i < len; t = t + norm(path[min(i + 1, last)] - path[i]), i = i + 1) t],
+        length = lengths[last],
+
         rotations = [for(i = 0, rot = fs_frame(tangents);
                          i < len;
                          i = i + 1,
@@ -124,8 +131,20 @@ function skin_points(profile, path, loop, twist = 0) =
         rotation = missmatch + twist
     )
     [for(i = [0 : last])
-        let(za = rotation * i / last)
-            each profile4 * orientate(path[i], rotations[i] * rot3_z(za))
+        let(za = rotation * lengths[i] / length)
+            orientate(path[i], rotations[i] * rot3_z(za))
+    ];
+
+//
+// Generate all the surface points of the swept volume.
+//
+function skin_points(profile, path, loop, twist = 0) =
+    let(profile4 = [for(p = profile) [p.x, p.y, p.z, 1]],
+
+        transforms = sweep_transforms(path, loop, twist)
+    )
+    [for(t = transforms)
+        each profile4 * t
     ];
 
 function cap(facets, segment = 0, end) = //! Create the mesh for an end cap
@@ -179,3 +198,65 @@ function before(path1, path2) =  //! Translate `path1` so its end meets the star
 function after(path1, path2) =  //! Translate `path2` so its start meets the end of `path1` and then concatenate
     let(end1 = len(path1) - 1, end2 = len(path2) - 1, offset = path1[end1] - path2[0])
         concat(path1, [for(i = [1 : end2]) path2[i] + offset]);
+
+function rounded_path(path) = //! Convert a rounded_path, consisting of a start coordinate, vertex / radius pairs and then an end coordinate, to a path of points for sweep.
+    let(len = len(path)) assert(len > 3 && len % 2 == 0) [
+        path[0],                                        // First point has no radius
+        for(i = [1 : 2 : len - 3]) let(                 // Step through the vertices with radii, i.e. not the first or last
+            prev = max(i - 2, 0),                       // Index of previous point, might be the first point, which is a special case
+            p0 = path[prev],                            // Point before the vertex
+            p1 = path[i],                               // Vertex
+            r = path[i + 1],                            // Radius of shortcut curve
+            p2 = path[i + 2],                           // Point after the vertex
+            v1 = assert(Len(p0) == 3, str("expected path[", prev,  "] to be a vertex coordinate, got ", p0))
+                 assert(Len(p1) == 3, str("expected path[", i,     "] to be a vertex coordinate, got ", p1))
+                 assert(Len(p2) == 3, str("expected path[", i + 2, "] to be a vertex coordinate, got ", p2))
+                 assert(is_num(r),    str("expected path[", i + 1, "] to be a radius, got ", r))
+            p0 - p1,                                    // Calculate vectors between vertices
+            v2 = p2 - p1,
+            a = angle_between(v1, -v2),                 // Angle turned through
+            arc_start = p1 + unit(v1) * r * tan(a / 2), // Calc the start position
+            z_axis = unit(cross(v1, v2)),               // z_axis is perpendicular to both vectors
+            centre = arc_start + unit(cross(z_axis, v1)) * r, // Arc center is a radius away, and perpendicular to v1 and the z_axis.
+            x_axis = arc_start - centre,                // Make the x_axis along the radius to the start point, includes radius a scale factor
+            y_axis = cross(x_axis, z_axis),             // y_axis perpendicular to the other two
+            sides = r2sides(ceil(r2sides(r) * a / 360)) // Sides needed to make the arc
+        )
+        for(j = [0 : sides], t = a * j / sides)         // For each vertex in the arc
+            cos(t) * x_axis + sin(t) * y_axis + centre, // Circular arc in the tiled xy plane.
+        path[len - 1],                                  // Last point has no radius
+    ];
+
+function segmented_path(path, min_segment) = [  //! Add points to a path to enforce a minimum segment length
+    for(i = [0 : len(path) - 2])
+            let(delta =
+                    assert(path[i] != path[i + 1], str("Coincident points at path[", i, "] = ", path[i]))
+                    path[i+1] - path[i],
+                segs = ceil(norm(delta) / min_segment)
+            )
+            for(j = [0 : segs - 1])
+                path[i] + delta * j / segs, // Linear interpolation
+            path[len(path) - 1]
+];
+
+function spiral_paths(path, n, r, twists, start_angle) = let( //! Create a new paths which sprial around the given path. Use for making twisted cables
+        segment = path_length(path) / twists / r2sides(2 * r),
+        transforms = sweep_transforms(segmented_path(path, segment), twist = 360 * twists),
+        initial = [r, 0, 0, 1] * rotate(start_angle)
+    ) [for(i = [0 : n - 1]) let(initial = [r, 0, 0, 1] * rotate(start_angle + i * 360 / n)) [for(t = transforms) initial * t]];
+
+function rounded_path_vertices(path) = [path[0], for(i = [1 : 2 : len(path) - 1]) path[i]]; //! Show the unrounded version of a rounded_path for debug
+
+module show_path(path) //! Show a path using a chain of hulls for debugging, duplicate points are highlighted.
+    for(i = [0 : len(path) - 2]) {
+        hull($fn = 16) {
+            translate(path[i])
+                sphere(0.1);
+
+            translate(path[i + 1])
+                sphere(0.1);
+        }
+        if(path[i] == path[i + 1])
+            translate(path[i])
+                color("red") sphere(1);
+    }

vitamins/ball_bearing.scad

@@ -28,13 +28,16 @@
 include <../utils/core/core.scad>
 include <../utils/tube.scad>
 
-function bb_name(type)     = type[0]; //! Part code without shield type suffix
-function bb_bore(type)     = type[1]; //! Internal diameter
-function bb_diameter(type) = type[2]; //! External diameter
-function bb_width(type)    = type[3]; //! Width
-function bb_colour(type)   = type[4]; //! Shield colour, "silver" for metal
-function bb_rim(type)      = type[5]; //! Outer rim thickness guesstimate
-function bb_hub(type)      = type[6]; //! Inner rim thickness guesstimate
+function bb_name(type)            = type[0]; //! Part code without shield type suffix
+function bb_bore(type)            = type[1]; //! Internal diameter
+function bb_diameter(type)        = type[2]; //! External diameter
+function bb_width(type)           = type[3]; //! Width
+function bb_colour(type)          = type[4]; //! Shield colour, "silver" for metal
+function bb_rim(type)             = type[5]; //! Outer rim thickness guesstimate
+function bb_hub(type)             = type[6]; //! Inner rim thickness guesstimate
+function bb_flange_diameter(type) = type[7]; //! Flange diameter
+function bb_flange_width(type)    = type[8]; //! Flange width
+
 
 module ball_bearing(type) { //! Draw a ball bearing
     shield = bb_colour(type);
@@ -45,32 +48,45 @@ module ball_bearing(type) { //! Draw a ball bearing
     h = bb_width(type);
     or = bb_diameter(type) / 2;
     ir = bb_bore(type) / 2;
+    fr = bb_flange_diameter(type) / 2;
+    fw = bb_flange_width(type);
 
     color("silver") {
         $fn = 360;
 
-        rim_chamfer = rim / 6;
         rotate_extrude()
             hull() {
-                translate([or - rim, -h / 2 + rim_chamfer])
-                    square([rim, h - 2 * rim_chamfer]);
+                chamfer = rim / 6;
+                translate([or - rim, -h / 2 + chamfer])
+                    square([rim, h - 2 * chamfer]);
 
                 translate([or - rim, -h / 2])
-                    square([rim - rim_chamfer, h]);
+                    square([rim - chamfer, h]);
             }
 
-        hub_chamfer = hub / 6;
+        if (fr)
+            rotate_extrude()
+                hull() {
+                    chamfer = fw / 6;
+                    translate([or - rim, -h / 2 + chamfer])
+                        square([fr - or + rim, fw - 2 * chamfer]);
+
+                    translate([or - rim,  -h / 2])
+                        square([fr - or + rim - chamfer, fw]);
+                }
+
         rotate_extrude()
             hull() {
-                translate([ir, -h / 2 + hub_chamfer])
-                    square([hub, h - 2 * hub_chamfer]);
+                chamfer = hub / 6;
+                translate([ir, -h / 2 + chamfer])
+                    square([hub, h - 2 * chamfer]);
 
-                translate([ir + hub_chamfer, -h / 2])
-                    square([hub - hub_chamfer, h]);
+                translate([ir + chamfer, -h / 2])
+                    square([hub - chamfer, h]);
             }
     }
 
-    color(shield) tube(or - rim - eps, ir + hub + eps, h - 1);
+    color(shield) tube(or - rim - eps, ir + hub + eps, h - (h < 5 ? 0.5 : 1));
 
     if($children)
         translate_z(bb_width(type) / 2)

vitamins/ball_bearings.scad

@@ -16,12 +16,24 @@
 // You should have received a copy of the GNU General Public License along with NopSCADlib.
 // If not, see <https://www.gnu.org/licenses/>.
 //
-BBSMR95 =  ["SMR95", 5,  9,  2.5, "silver",    0.5, 0.7];  // SMR95 ball bearing for FlexDrive extruder
-BB624   =  ["624",   4,  13, 5,   "blue",      1.2, 1.2];  // 624 ball bearing for idlers
-BB608   =  ["608",   8,  22, 7,   "OrangeRed", 1.4, 2.0];  // 608 bearings for wades
-BB6200   = ["6200",  10, 30, 9,   "black",     2.3, 3.6];  // 6200 bearings for KP pillow blocks
-BB6201   = ["6201",  12, 32, 10,  "black",     2.4, 3.7];  // 6201 bearings for KP pillow blocks
-BB6808   = ["6808",  40, 52, 7,   "black",     1.5, 1.6];
-ball_bearings = [BBSMR95, BB624, BB608, BB6200, BB6201, BB6808];
+
+
+//          name     id od   w    colour       or    ir    fd   fw
+BBSMR95  = ["SMR95", 5,  9,  2.5, "silver",    0.5,  0.7,   0,    0];  // SMR95 ball bearing for FlexDrive extruder
+BB624    = ["624",   4,  13, 5,   "blue",      1.2,  1.2,   0,    0];  // 624 ball bearing for idlers
+BB608    = ["608",   8,  22, 7,   "black",     1.4,  2.0,   0,    0];  // 608 bearings for wades
+BB6200   = ["6200",  10, 30, 9,   "black",     2.3,  3.6,   0,    0];  // 6200 bearings for KP pillow blocks
+BB6201   = ["6201",  12, 32, 10,  "black",     2.4,  3.7,   0,    0];  // 6201 bearings for KP pillow blocks
+BB6808   = ["6808",  40, 52, 7,   "black",     1.5,  1.6,   0,    0];
+BBMR63   = ["MR63",  3,  6,  2.5, "silver",    0.5,  0.5,   0,    0];
+BBMR83   = ["MR83",  3,  8,  3,   "silver",    0.5,  0.5,   0,    0];
+BBMR85   = ["MR85",  5,  8,  2.5, "silver",    0.5,  0.5,   0,    0];
+BBMR93   = ["MR93",  3,  9,  4,   "silver",    0.5,  0.5,   0,    0];
+BBMR95   = ["MR95",  5,  9,  3,   "silver",    0.5,  0.5,   0,    0];
+BBF623   = ["F623",  3,  10, 4,   "black",     0.6,  0.7,  11.5,  1];
+BBF693   = ["F693",  3,  8,  3,   "silver",    0.5,  0.7,  9.5,   0.7];
+BBF695   = ["F695",  5,  13, 4,   "silver",    1.0,  1.0,  15,    1];
+
+ball_bearings = [BBF693, BBF623, BBF695, BBMR63, BBMR83, BBMR93, BBSMR95, BB624, BB608, BB6200, BB6201, BB6808];
 
 use <ball_bearing.scad>

vitamins/blower.scad

@@ -20,6 +20,8 @@
 //
 //! Models of radial blowers.
 //
+//! Note that blower_exit() and blower_exit_offset() are for the inside of the exit for square blowers but the outside for spiral blowers.
+//
 include <../utils/core/core.scad>
 use <../utils/rounded_cylinder.scad>
 use <../utils/quadrant.scad>
@@ -45,8 +47,10 @@ function blower_wall_left(type)   = type[15]; //! Left side wall thickness
 function blower_wall_right(type)  = type[17]; //! Right wall thickness (for square fans)
 
 function blower_casing_is_square(type) = blower_depth(type) < 15; //! True for square radial fans, false for spiral shape radial blowers
-function blower_exit_offset(type) = blower_casing_is_square(type) ? blower_length(type) / 2 : blower_exit(type) / 2; //! Offset of exit's centre from the edge
-
+function blower_exit_offset(type) =   //! Offset of exit's centre from the edge
+    blower_casing_is_square(type) ? len(blower_screw_holes(type)) > 2 ? blower_length(type) / 2
+                                                                      : blower_wall_left(type) + blower_exit(type) / 2
+                                  : blower_exit(type) / 2;
 fan_colour = grey(20);
 
 module blower_fan(type, casing_is_square) {
@@ -100,6 +104,7 @@ module blower_square(type) { //! Draw a square blower
                 // cut out the inside, leaving the corners
                 translate([hole_count == 2 ? wall_left : corner_inset + wall_left, -eps])
                     square([blower_exit(type), width / 2], center = false);
+
                 translate(blower_axis(type))
                     circle(d = blower_bore(type) + 1);
             } else {
@@ -225,6 +230,9 @@ module blower(type) { //! Draw specified blower
 
         blower_fan(type, is_square);
     }
+    *translate([blower_exit(type) / 2 + blower_exit_offset(type), 0])
+        rotate(180)
+            #cube([blower_exit(type), 30, depth]);
 }
 
 module blower_hole_positions(type) //! Translate children to screw hole positions

vitamins/cable_strip.scad

@@ -27,8 +27,9 @@
 //
 include <../utils/core/core.scad>
 cable_strip_thickness = 0.8;
-function ribbon_clamp_slot(ways) = ways * inch(0.05) + 1;
-function ribbon_clamp_slot_depth() = cable_strip_thickness + inch(0.05);
+function ribbon_ways(ways) = is_list(ways) ? ways : [ways, 1]; //! Allows ribbon clamps to accept multiple cables
+function ribbon_clamp_slot(ways) = let(w = ribbon_ways(ways)) w[0] * inch(0.05) + 1; //! Width of the slot to accept a ribbon cable
+function ribbon_clamp_slot_depth() = cable_strip_thickness + inch(0.05); //! Depth of slot to accept a ribbon cable and a cable strip
 function cable_strip_thickness() = cable_strip_thickness;
 
 use <../utils/bezier.scad>

vitamins/d_connector.scad

@@ -72,6 +72,16 @@ module d_pillar() { //! Draw a pillar for a D-connector
         female_metric_thread(screw, pitch, height, false, colour = d_pillar_colour);
 }
 
+module d_plug_D(length, width, rad) { //! D plug D shape
+    d = width / 2 - rad;
+    offset = d * sin(10);
+
+    hull()
+        for(x = [-1, 1], y = [-1, 1])
+            translate([x * (length / 2 - rad) + y * x * offset, y * (width / 2 - rad)])
+                circle(rad);
+}
+
 module d_plug(type, socket = false, pcb = false, idc = false) { //! Draw specified D plug, which can be IDC, PCB or plain solder bucket
     hole_r = 3.05 / 2;
     dwall = 0.5;
@@ -89,16 +99,6 @@ module d_plug(type, socket = false, pcb = false, idc = false) { //! Draw specifi
     vitamin(str(socket ? "d_socket(" : "d_plug(", type[0], arg(pcb, false, "pcb"), arg(idc, false, "idc"),
                                   "): D-type ", pins, " way ", desc, socket ? " socket" : " plug"));
 
-    module D(length, width, rad) {
-        d = width / 2 - rad;
-        offset = d * sin(10);
-
-        hull()
-            for(x = [-1, 1], y = [-1, 1])
-                translate([x * (length / 2 - rad) + y * x * offset, y * (width / 2 - rad)])
-                    circle(rad);
-    }
-
     module pin_positions()
         for($i = [1 : pins])
             translate([($i - (pins + 1) / 2) * 2.77 / 2, ($i % 2 - 0.5) * 2.84])
@@ -117,14 +117,14 @@ module d_plug(type, socket = false, pcb = false, idc = false) { //! Draw specifi
 
         linear_extrude(front_height, convexity = 5)
             difference() {
-                D(d_length, d_width, 2.5);
-                D(d_length - 2 * dwall, d_width - 2 * dwall, 2.5 - dwall);
+                d_plug_D(d_length, d_width, 2.5);
+                d_plug_D(d_length - 2 * dwall, d_width - 2 * dwall, 2.5 - dwall);
             }
 
         if(!idc)
-            rotate([0,180,0])
+            hflip()
                 linear_extrude(back_height, convexity = 5)
-                    D(d_lengths(type)[0] + 2 * dwall, d_widths(type)[0] + 2 * dwall, 2.5 + dwall);
+                    d_plug_D(d_lengths(type)[0] + 2 * dwall, d_widths(type)[0] + 2 * dwall, 2.5 + dwall);
 
     }
     //
@@ -134,12 +134,12 @@ module d_plug(type, socket = false, pcb = false, idc = false) { //! Draw specifi
         translate_z(d_flange_thickness(type) + eps)
             rotate([0, 180, 0])
                 linear_extrude(back_height + 1 + d_flange_thickness(type), convexity = 5)
-                    D(d_length - dwall, d_width - dwall, 2.5 - dwall/2);
+                    d_plug_D(d_length - dwall, d_width - dwall, 2.5 - dwall/2);
 
         if(socket)
             linear_extrude(front_height - eps, convexity = 5)
                 difference() {
-                    D(d_length - dwall, d_width - dwall, 2.5 - dwall/2);
+                    d_plug_D(d_length - dwall, d_width - dwall, 2.5 - dwall/2);
 
                     pin_positions()
                         circle(r = 0.7);

vitamins/microswitch.scad

@@ -20,7 +20,9 @@
 //
 //! Used for limit switches. Currently only the button type is supported as the lever and roller types are less accurate.
 //!
-//! The switch is drawn with the button at the nominal operation point. This can be plus or minus `microswitch_op_tol(type)`.
+//! The origin of the switch is in the center of the body. `microswitch_button_pos()` is the offset to tip of the button at its operating point.
+//!
+//! The switch is drawn with the button at the nominal operation point. This actual trigger point can be plus or minus `microswitch_op_tol(type)`.
 //!
 //! When the button is released it comes out by a maximum of `microswitch_fp_max(type)` from the nominal operating point.
 //

vitamins/pcb.scad

@@ -38,6 +38,7 @@ use <led.scad>
 use <dip.scad>
 use <axial.scad>
 use <smd.scad>
+use <terminal.scad>
 include <potentiometers.scad>
 
 function pcb_name(type)         = type[1];  //! Description
@@ -1088,6 +1089,7 @@ module pcb_component(comp, cutouts = false, angle = undef) { //! Draw pcb compon
             if(show(comp, "smd_res"))       smd_resistor(comp[4], comp[5]);
             if(show(comp, "smd_cap"))       smd_capacitor(comp[4], comp[5]);
             if(show(comp, "vero_pin"))      vero_pin(param(4, false));
+            if(show(comp, "terminal"))      terminal_block(comp[5], comp[4]);
         }
     }
 }

vitamins/pcbs.scad

@@ -198,6 +198,34 @@ Duex5 = ["Duex5", "Duex5 expansion board",
                                                                     ]),
                                                                     []];
 
+BTT_RELAY_V1_2 = [
+    "BTT_RELAY_V1_2", "BigTreeTech Relay Module v1.2",
+    80.4, 36.3, 1.5, // size
+    1, // corner radius
+    3, // mounting hole diameter
+    5, // pad around mounting hole
+    grey(25), // color
+    false, // true if parts should be separate BOM items
+    [ // hole positions
+        [3, 3.5], [-3, 3.5], [3, -3.5], [-3, -3.5]
+    ],
+    [ // components
+        [  44.5,  10.0,    0, "block", 25,  20,    15.8, grey(20) ],
+        [  47.5,  -7.6,    0, "block", 19,  15.25, 15.8, "SkyBlue" ],
+        //[ -14.5,  18.15,   0, "block", 16,  30,    17.0, grey(25) ],
+        //[ -14.5,  18.15,   0, "block", 15,  25.5,  17.1, "PaleGoldenrod" ],
+        [   2.5,  10.65, 270, "jst_xh", 2, false, grey(20), ],
+        [   2.5,  18.15, 270, "jst_xh", 2, false, grey(20), ],
+        [   2.5,  25.65, 270, "jst_xh", 2, false, grey(20), ],
+        [  11.0,   2.0,    0, "2p54header", 2, 1 ],
+        [  23.0,   2.0,    0, "2p54header", 4, 1 ],
+        [   7.9,  -3.3,   90, "2p54header", 2, 1 ],
+        [  -6.5,   2.45, 180, "terminal",   3, [10, 1.33, 13.2, 16, 7, 13] ],
+    ],
+    [], // accessories
+    [], // grid
+];
+
 BTT_SKR_MINI_E3_V2_0 = [
     "BTT_SKR_MINI_E3_V2_0", "BigTreeTech SKR Mini E3 v2.0",
     100.75, 70.25, 1.6, // size
@@ -721,11 +749,11 @@ MP1584EN = ["MP1584EN", "MP1584EN 3A buck converter", 22, 17, 1.2, 0, 1, [2, 2],
     []
 ];
 
-PERF80x20 = ["PERF80x20", "Perfboard 80 x 20mm", 80, 20, 1.6, 0, 2.3, 0, "green", true, [[2,2],[-2,2],[2,-2],[-2,-2]], [], [], [5.87, 3.49]];
+PERF80x20 = ["PERF80x20", "Perfboard 80 x 20mm", 80, 20, 1.6, 0, 2.3, 0, "green", true, [[2,2],[-2,2],[2,-2],[-2,-2]], [], [], [5.71, 3.65]];
 
-PERF70x50 = ["PERF70x50", "Perfboard 70 x 50mm", 70, 50, 1.6, 0, 2.3, 0, "green", true, [[2,2],[-2,2],[2,-2],[-2,-2]], [], [], [5.87, 3.49]];
+PERF70x50 = ["PERF70x50", "Perfboard 70 x 50mm", 70, 50, 1.6, 0, 2.3, 0, "green", true, [[2,2],[-2,2],[2,-2],[-2,-2]], [], [], [5.79, 3.41]];
 
-PERF70x30 = ["PERF70x30", "Perfboard 70 x 30mm", 70, 30, 1.6, 0, 2.3, 0, "green", true, [[2,2],[-2,2],[2,-2],[-2,-2]], [], [], [5.87, 3.49]];
+PERF70x30 = ["PERF70x30", "Perfboard 70 x 30mm", 70, 30, 1.6, 0, 2.3, 0, "green", true, [[2,2],[-2,2],[2,-2],[-2,-2]], [], [], [5.79, 3.57]];
 
 PERF60x40 = ["PERF60x40", "Perfboard 60 x 40mm", 60, 40, 1.6, 0, 2.3, 0, "green", true, [[2,2],[-2,2],[2,-2],[-2,-2]], [], [], [5.87, 3.49]];
 
@@ -882,7 +910,7 @@ KY_040 = ["KY_040", "KY-040 rotart encoder breakout",
 
 tiny_pcbs = [XIAO, MP1584EN, TP4056, ESP_01, LIPO_fuel_gauge];
 
-pcbs = [RAMPSEndstop, KY_040, MT3608, ZC_A0591, ArduinoNano, RPI_Pico, ESP32_DOIT_V1, RPI0, EnviroPlus, ArduinoUno3, ArduinoLeonardo, WD2002SJ, RPI3, RPI4, BTT_SKR_MINI_E3_V2_0, BTT_SKR_E3_TURBO, BTT_SKR_V1_4_TURBO, DuetE, Duex5];
+pcbs = [RAMPSEndstop, KY_040, MT3608, ZC_A0591, ArduinoNano, RPI_Pico, ESP32_DOIT_V1, RPI0, EnviroPlus, ArduinoUno3, ArduinoLeonardo, WD2002SJ, RPI3, RPI4, BTT_RELAY_V1_2, BTT_SKR_MINI_E3_V2_0, BTT_SKR_E3_TURBO, BTT_SKR_V1_4_TURBO, DuetE, Duex5];
 
 pcbs_not_shown = [Melzi, Duex2, PSU12V1A, Keyes5p1, PI_IO, ExtruderPCB];
 

vitamins/pillars.scad

@@ -30,6 +30,7 @@
 //                                                               d                                   r         r         d   d
 //
 M2x16_brass_pillar     = ["M2x16_brass_pillar",     "nurled",    2, 16, 3.17,      3.17,       0, 0, brass,     brass,    3,-3];
+M3x6_hex_pillar        = ["M3x6_hex_pillar",        "hex",       3,  6, 5/cos(30), 5/cos(30),  6, 6, brass,     brass,   -5, 6];
 M3x13_hex_pillar       = ["M3x13_hex_pillar",       "hex",       3, 13, 5/cos(30), 5/cos(30),  6, 6, "silver",  silver,  -6, 6];
 M3x20_hex_pillar       = ["M3x20_hex_pillar",       "hex",       3, 20, 5/cos(30), 5/cos(30),  6, 6, "silver",  silver,  -8, 8];
 M3x20_nylon_pillar     = ["M3x20_nylon_pillar",     "nylon",     3, 20, 8,         5/cos(30),  0, 6, "white",   brass,   -6, 6];
@@ -38,6 +39,6 @@ M3x20_nylon_hex_pillar = ["M3x20_nylon_hex_pillar", "hex nylon", 3, 20, 8/cos(30
 M3x10_nylon_hex_pillar = ["M3x10_nylon_hex_pillar", "hex nylon", 3, 10,5.5/cos(30),5.5/cos(30),6, 6,  grey(20),   grey(20),  -6, 6];
 
 
-pillars = [M2x16_brass_pillar, M3x13_hex_pillar, M3x20_hex_pillar, M3x20_nylon_pillar, M4x17_nylon_pillar, M3x10_nylon_hex_pillar, M3x20_nylon_hex_pillar];
+pillars = [M2x16_brass_pillar, M3x6_hex_pillar, M3x13_hex_pillar, M3x20_hex_pillar, M3x20_nylon_pillar, M4x17_nylon_pillar, M3x10_nylon_hex_pillar, M3x20_nylon_hex_pillar];
 
 use <pillar.scad>

vitamins/psu.scad

@@ -29,7 +29,9 @@ use <../utils/sector.scad>
 use <../utils/round.scad>
 use <fan.scad>
 use <iec.scad>
+use <pcb.scad>
 use <rocker.scad>
+use <terminal.scad>
 
 function psu_face_holes(type)        = type[0];     //! List of screw hole positions
 function psu_face_thickness(type)    = type[1];     //! The thickness
@@ -52,67 +54,9 @@ function atx_psu(type)               = type[7];     //! True if an ATX style PSU
 function psu_left_bay(type)          = type[8];     //! Bay for terminals
 function psu_right_bay(type)         = type[9];     //! Bay for heatsink
 function psu_terminals(type)         = type[10];    //! How many terminals and the y offset from the back
-function psu_faces(type)             = type[11];    //! List of face descriptions
-function psu_accessories(type)       = type[12];    //! Accessories to add to BOM, e.g. mains lead
-
-function terminal_block_pitch(type)   = type[0];    //! Pitch between screws
-function terminal_block_divider(type) = type[1];    //! Width of the dividers
-function terminal_block_height(type)  = type[2];    //! Height of the dividers
-function terminal_block_depth(type)   = type[3];    //! Total depth
-function terminal_block_height2(type) = type[4];    //! Height under the contacts
-function terminal_block_depth2(type)  = type[5];    //! Depth of contact well
-
-function terminal_block_length(type, ways) = terminal_block_pitch(type) * ways + terminal_block_divider(type); //! Total length of terminal block
-
-module terminal_block(type, ways) { //! Draw a power supply terminal block
-    tl = terminal_block_length(type, ways);
-    depth = terminal_block_depth(type);
-    depth2 = terminal_block_depth2(type);
-    div = terminal_block_divider(type);
-    h = terminal_block_height(type);
-    h2 = terminal_block_height2(type);
-    pitch = terminal_block_pitch(type);
-    back_wall = depth - depth2;
-    contact_depth = depth2 - back_wall;
-    contact_width = pitch - div;
-    contact_h = 0.4;
-    washer_t = 1.2;
-    translate([0, -tl]) {
-        color(grey(20)) {
-            cube([depth, tl, h2]);
-
-            translate([depth2, 0])
-                cube([depth - depth2, tl, h]);
-
-            for(i = [0 : ways])
-                translate([0, i * pitch + div])
-                    rotate([90, 0, 0])
-                        linear_extrude(div)
-                            hull() {
-                                r = 2;
-                                square([depth, eps]);
-
-                                translate([depth - eps, 0])
-                                    square([eps, h]);
-
-                                translate([r, h - r])
-                                    circle4n(r);
-                            }
-        }
-        color("silver")
-            for(i = [0 : ways - 1]) translate([0, i * pitch + div, h2]) {
-                translate([back_wall, 1])
-                    cube([contact_depth, contact_width - 2, contact_h]);
-
-                translate([back_wall + contact_depth / 2 - contact_width / 2, 0])
-                    cube([contact_width, contact_width, contact_h + washer_t]);
-
-                translate([back_wall + contact_depth / 2, contact_width / 2, contact_h + washer_t])
-                    not_on_bom() no_explode()
-                        screw(M3_pan_screw, 8);
-            }
-    }
-}
+function psu_pcb(type)               = type[11];    //! The PCB
+function psu_faces(type)             = type[12];    //! List of face descriptions
+function psu_accessories(type)       = type[13];    //! Accessories to add to BOM, e.g. mains lead
 
 function psu_face_transform(type, face) =           //! Returns a transformation matrix to get to the specified face
     let(l = psu_length(type),
@@ -187,8 +131,13 @@ module psu(type) { //! Draw a power supply
                                         polygon([for(p = cutout) p]);
 
                                 for(h = psu_face_holes(f))
-                                    translate(h)
-                                        drill(screw_pilot_hole(psu_screw(type)), 0);
+                                    translate([h.x, h.y])
+                                        hull() {
+                                            drill(psu_screw(type) == false ? psu_screw_hole_radius(type) : screw_pilot_hole(psu_screw(type)), 0);
+                                            if (is_list(h[2]))
+                                                translate([h[2].x, h[2].y])
+                                                    drill(psu_screw(type) == false ? psu_screw_hole_radius(type) : screw_pilot_hole(psu_screw(type)), 0);
+                                        }
 
                                 g = psu_face_grill(f);
                                 if(g) {
@@ -268,17 +217,15 @@ module psu(type) { //! Draw a power supply
         lt =  psu_face_thickness(faces[f_left]);
         cutout = psu_face_cutouts(faces[f_left])[0];
         z = psu_terminal_block_z(type);
-        pw = w -ft - bt;
-        pl = l - right - rt;
-        pcb_thickness = 1.6;
+        pcb =  [l - right - rt, w - ft - bt, 1.6];
         heatsink_offset = 13.5;
         color("#FCD67E")
-            translate([(-right - rt) / 2, (ft - bt) / 2, z - pcb_thickness])
-                linear_extrude(pcb_thickness)
+            translate([(-right - rt) / 2, (ft - bt) / 2, z - pcb.z])
+                linear_extrude(pcb.z)
                     difference() {
-                        square([pl, pw], center = true);
+                        square([pcb.x, pcb.y], center = true);
 
-                        translate([-pl / 2, -pw / 2])
+                        translate([-pcb.x / 2, -pcb.y / 2])
                             square(16, center = true);
                     }
 
@@ -295,7 +242,7 @@ module psu(type) { //! Draw a power supply
             earth_d = 5;
             translate([-l / 2 + earth_inset, w / 2 - tab_w / 2]) {
                 color("silver")
-                    cylinder(d = earth_d, h = z - pcb_thickness);
+                    cylinder(d = earth_d, h = z - pcb.z);
 
                 translate_z(z + lt)
                     not_on_bom() no_explode()
@@ -332,6 +279,13 @@ module psu(type) { //! Draw a power supply
                         }
         }
     }
+    // PCB
+    pcb = psu_pcb(type);
+    if (pcb) {
+        translate(pcb[0])
+            pcb(pcb[1]);
+    }
+
 }
 
 module psu_screw_positions(type, face = undef) { //! Position children at the screw positions on the preferred mounting face, which can be overridden.
@@ -342,7 +296,7 @@ module psu_screw_positions(type, face = undef) { //! Position children at the sc
     if(len(psu_faces(type)) > f)
         multmatrix(psu_face_transform(type, f))
             for(point = psu_face_holes(psu_faces(type)[f]))
-                translate(point)
+                translate([point.x, point.y])
                     children();
 }
 

vitamins/psus.scad

@@ -28,7 +28,7 @@ include <iecs.scad>
 mw_terminals = [9.525, 1.5, 15, 17.8, 7, 15];
 
 PD_150_12 =
-    ["PD_150_12", "PD-150-12", 199, 98, 38, M3_pan_screw, M3_clearance_radius, false, 11, 4.5, [7, 11, mw_terminals],
+    ["PD_150_12", "PD-150-12", 199, 98, 38, M3_pan_screw, M3_clearance_radius, false, 11, 4.5, [7, 11, mw_terminals], false,
         [
             [[[82.5, -40], [82.5, 40], [-37.5, -40], [-37.5, 40]], 1.5, []],
             [[],                                                   0.5, [], true],
@@ -42,7 +42,7 @@ PD_150_12 =
 
 st_terminals = [9.666, 2, 13, 15, 8, 13.5];
 S_250_48 =
-    ["S_250_48", "S-250-48", 200, 110, 50, M3_pan_screw, M3_clearance_radius, false, 13, 5, [9, 11, st_terminals],
+    ["S_250_48", "S-250-48", 200, 110, 50, M3_pan_screw, M3_clearance_radius, false, 13, 5, [9, 11, st_terminals], false,
         [
             [[[-39, -45.5], [-39,  39.5], [86, -45.5], [86, 39.5]], 1.5, []],
             [[],                                                    0.5, [], true],
@@ -56,7 +56,7 @@ S_250_48 =
 
 // Single fan at back, wires exit opposite side from mains in
 ATX500 =
-    ["ATX500", "ATX500", 150, 140, 86, No632_pan_screw, 5/2, true, 0, 0, [],
+    ["ATX500", "ATX500", 150, 140, 86, No632_pan_screw, 5/2, true, 0, 0, [], false,
         [
             [[], 0.8, []],
             [[], 0.8, []],
@@ -83,7 +83,7 @@ ATX500 =
 
 // Single fan in the top, wires exit opposite side from mains in
 ATX300 = let(p = [113 / 2, 51.5 / 2], s = [125, 100, 64], iec = [35.5, 6], sw = [6.5, 7])
-    ["ATX300", "FSP300-60GHX", s.x, s.y, s.z, No632_pan_screw, No6_clearance_radius, true, 0, 0, [],
+    ["ATX300", "FSP300-60GHX", s.x, s.y, s.z, No632_pan_screw, No6_clearance_radius, true, 0, 0, [], false,
         [
             [[], 0.5, []],
             [[], 0.5, [], false, [0, 8, fan80x25]],
@@ -121,7 +121,7 @@ ATX300 = let(p = [113 / 2, 51.5 / 2], s = [125, 100, 64], iec = [35.5, 6], sw =
 
 
 KY240W =
-    ["KY240W", "KY-240W-12-L", 199, 110, 50, M3_cap_screw, M3_clearance_radius, false, 0, 0, [],
+    ["KY240W", "KY-240W-12-L", 199, 110, 50, M3_cap_screw, M3_clearance_radius, false, 0, 0, [], false,
         [
             [[[ 199 / 2 - 12,  110 / 2 - 93],
             [ 199 / 2 - 12,  110 / 2 - 9 ],
@@ -147,6 +147,7 @@ S_300_12 = [
         18,// y offset
         st_terminals
     ],
+    false, // pcb
     // faces
     [
         [// f_bottom, bottom
@@ -224,13 +225,87 @@ S_300_12 = [
     []
 ];
 
+// NIUGUY PSUs
+
+function NIUGUY_CB_PCB(size, left=0, right=0, front=0, back=0) =
+let(s = [size.x - left - right, size.y - front - back], c=9.5)
+[
+    [left/2 - right/2, front/2 - back/2, 3], // offset
+    [ // pcb
+        "", "",
+        s.x, s.y, size.z, // size
+        //size.x, size.y, size.z,
+        1, // corner radius
+        0, // mounting hole diameter
+        0, // pad around mounting hole
+        "DarkBlue", // color
+        false, // true if parts should be separate BOM items
+        [], // hole positions
+        [ // components
+            // terminal parameters are:  pitch, divider width, divider height, total depth, height under contacts, depth of contact well
+            [  -0.25,   12, 180, "terminal",   3, [8.333, 1.5, 12, 15.5, 5, 13.5] ],
+            [   0.25,   35.5, 0, "terminal",   4, [8.333, 1.5, 12, 15.5, 5, 13.5] ],
+        ],
+        [], // accessories
+        [], // grid
+        [ // pcb polygon
+            [-s.x/2, -s.y/2],
+            [-s.x/2, s.y/2 - c], [-s.x/2 + c, s.y/2 - c], [-s.x/2 + c, s.y/2],
+            [s.x/2, s.y/2],
+            [s.x/2, -s.y/2 + c], [s.x/2 - c, -s.y/2 + c], [s.x/2 - c, -s.y/2]
+        ]
+    ],
+];
+
+function NIUGUY_CB_PSU(id, name, s /*size*/, c=10/*corner*/) =
+    [id, name, // ID and Name
+    s.x, s.y, s.z, // Size
+    false, 2.5, // Screw type and hole radius
+    false, // true if ATX
+    0, 0, // left and right bays
+    false, // terminals
+    NIUGUY_CB_PCB([s.x, s.y, 1.6], 0.5, 0.5, 2, 2), // pcb
+    [ // parameters are: holes, thickness, cutouts, grill, fans, iec, switch, vents, panel cutout
+        // bottom
+        [ [[s.x/2 - 4, s.y/2 - 7.5, [5, 0]], [-s.x/2 + 4, -s.y/2 + 7.5, [-5, 0] ], ], 1.5, [] ], // two slots cutout for screws
+        // top
+        [ [], 0.5,  [
+                        [ [-s.x/2 + 20, -s.y/2], [-s.x/2 + 20, s.y/2], [-s.x/2, s.y/2], [-s.x/2, -s.y/2] ],
+                        [ [ s.x/2 - 20, -s.y/2], [ s.x/2 - 20, s.y/2], [ s.x/2, s.y/2], [ s.x/2, -s.y/2] ]
+                    ], [5.5, 1, 6, [50, 30, 6, 6], []] ], // grill
+        // left
+        [ [], 0.5,  [
+                        [ [s.y/2, s.z/2], [s.y/2, -s.z/2 + 3], [-s.y/2, -s.z/2 + 3], [-s.y/2, s.z/2] ], // +3 is for placement of pcb
+                        [ [s.y/2, s.z/2], [s.y/2, -s.z/2], [-s.y/2, -s.z/2], [-s.y/2, s.z/2] ],
+                    ] ],
+        // right
+        [ [], 0.5,  [
+                        [ [-s.y/2, -s.z/2], [s.y/2, -s.z/2], [s.y/2, s.z/2], [-s.y/2, s.z/2] ],
+                    ] ],
+        // front
+        [ [], 2.0,  [
+                        [ [-s.x/2, s.z/2 - c], [-s.x/2, s.z/2], [-s.x/2 + c, s.z/2] ],
+                        [ [ s.x/2, s.z/2 - c], [ s.x/2, s.z/2], [ s.x/2 - c, s.z/2] ]
+                    ], [4.5, 1.5, 6, [15, 15, 4, 8], []] ], // grill
+        // back
+        [ [], 2.0,  [
+                        [ [-s.x/2, -s.z/2 + c], [-s.x/2, -s.z/2], [-s.x/2 + c, -s.z/2] ],
+                        [ [ s.x/2, -s.z/2 + c], [ s.x/2, -s.z/2], [ s.x/2 - c, -s.z/2] ]
+                    ] ],
+    ],
+    [] // accessories for BOM
+];
+
+NG_CB_200W_24V = NIUGUY_CB_PSU("NG_CB_200W_24V", "NIUGUY CB-200W-24V", [178, 50, 22]);
+NG_CB_500W_24V = NIUGUY_CB_PSU("NG_CB_500W_24V", "NIUGUY CB-500W-24V", [238, 50, 22]);
+
 External =
-    ["External", "X Box", 0, 0, 0, false, false, false, 0, 0, [],
+    ["External", "X Box", 0, 0, 0, false, false, false, 0, 0, [], false,
         [],
         [": IEC mains lead"]
     ];
 
-psus = [PD_150_12, S_250_48, S_300_12, ATX300, ATX500];
+psus = [NG_CB_200W_24V, NG_CB_500W_24V, PD_150_12, S_250_48, S_300_12, ATX300, ATX500];
 
 psus_not_shown = [KY240W];
 

vitamins/stepper_motor.scad

@@ -205,12 +205,12 @@ module NEMA_screw_positions(type, n = 4) { //! Positions children at the screw h
                     children();
 }
 
-module NEMA_screws(type, screw, n = 4, screw_length = 8, earth = undef) //! Place screws and optional earth tag
+module NEMA_screws(type, screw, n = 4, screw_length = 8, earth = undef, earth_rot = undef) //! Place screws and optional earth tag
     NEMA_screw_positions(type, n)
         if($i != earth)
             screw_and_washer(screw, screw_length, true);
         else
-            rotate($i > 1 ? 180 : 0)
+            rotate(is_undef(earth_rot) ? $i > 1 ? 180 : 0 : earth_rot)
                 ring_terminal(M3_ringterm)
                     star_washer(screw_washer(screw))
                         screw(screw, screw_length);

vitamins/terminal.scad

@@ -0,0 +1,81 @@
+//
+// NopSCADlib Copyright Chris Palmer 2018
+// nop.head@gmail.com
+// hydraraptor.blogspot.com
+//
+// This file is part of NopSCADlib.
+//
+// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
+// GNU General Public License as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+//
+// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+// See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with NopSCADlib.
+// If not, see <https://www.gnu.org/licenses/>.
+//
+
+//! Terminal blocks for power supplies and PCBs.
+
+include <../core.scad>
+
+function terminal_block_pitch(type)   = type[0];    //! Pitch between screws
+function terminal_block_divider(type) = type[1];    //! Width of the dividers
+function terminal_block_height(type)  = type[2];    //! Height of the dividers
+function terminal_block_depth(type)   = type[3];    //! Total depth
+function terminal_block_height2(type) = type[4];    //! Height under the contacts
+function terminal_block_depth2(type)  = type[5];    //! Depth of contact well
+
+function terminal_block_length(type, ways) = terminal_block_pitch(type) * ways + terminal_block_divider(type); //! Total length of terminal block
+
+module terminal_block(type, ways) { //! Draw a power supply terminal block
+    tl = terminal_block_length(type, ways);
+    depth = terminal_block_depth(type);
+    depth2 = terminal_block_depth2(type);
+    div = terminal_block_divider(type);
+    h = terminal_block_height(type);
+    h2 = terminal_block_height2(type);
+    pitch = terminal_block_pitch(type);
+    back_wall = depth - depth2;
+    contact_depth = depth2 - back_wall;
+    contact_width = pitch - div;
+    contact_h = 0.4;
+    washer_t = 1.2;
+    translate([0, -tl]) {
+        color(grey(20)) {
+            cube([depth, tl, h2]);
+
+            translate([depth2, 0])
+                cube([depth - depth2, tl, h]);
+
+            for(i = [0 : ways])
+                translate([0, i * pitch + div])
+                    rotate([90, 0, 0])
+                        linear_extrude(div)
+                            hull() {
+                                r = 2;
+                                square([depth, eps]);
+
+                                translate([depth - eps, 0])
+                                    square([eps, h]);
+
+                                translate([r, h - r])
+                                    circle4n(r);
+                            }
+        }
+        color("silver")
+            for(i = [0 : ways - 1]) translate([0, i * pitch + div, h2]) {
+                translate([back_wall, 1])
+                    cube([contact_depth, contact_width - 2, contact_h]);
+
+                translate([back_wall + contact_depth / 2 - contact_width / 2, 0])
+                    cube([contact_width, contact_width, contact_h + washer_t]);
+
+                translate([back_wall + contact_depth / 2, contact_width / 2, contact_h + washer_t])
+                    not_on_bom() no_explode()
+                        screw(M3_pan_screw, 8);
+            }
+    }
+}

vitamins/tubing.scad

@@ -29,6 +29,7 @@ function tubing_id(type)       = type[3]; //! Inside diameter
 function tubing_colour(type)   = type[4]; //! Colour
 
 function tubing_or(type)        = tubing_od(type) / 2; //! Outside radius
+function tubing_ir(type)        = tubing_id(type) / 2; //! Inside radius
 
 module tubing(type, length = 15, forced_id = 0, center = true) { //! Draw specified tubing with optional forced internal diameter
     original_od = tubing_od(type);
@@ -50,4 +51,3 @@ module tubing(type, length = 15, forced_id = 0, center = true) { //! Draw specif
                     circle(d = id);
                 }
 }
-

vitamins/wire.scad

@@ -32,13 +32,13 @@ module ribbon_cable(ways, length)                   //! Add ribbon cable to the
 //
 // Cable sizes
 //
-function cable_wires(cable)     = cable[0]; //! Number of wires in a bindle
+function cable_wires(cable)     = cable[0]; //! Number of wires in a bundle
 function cable_wire_size(cable) = cable[1]; //! Size of each wire in a bundle
 
 // numbers from http://mathworld.wolfram.com/CirclePacking.html
 function cable_radius(cable) = [0, 1, 2, 2.15, 2.41, 2.7, 3, 3, 3.3][cable_wires(cable)] * cable_wire_size(cable) / 2; //! Radius of a bundle of wires, see <http://mathworld.wolfram.com/CirclePacking.html>.
 
-function wire_hole_radius(cable) = ceil(2 * cable_radius(cable) +1) / 2; //! Radius of a hole to accept a bundle of wires
+function wire_hole_radius(cable) = ceil(4 * cable_radius(cable) + 1) / 4; //! Radius of a hole to accept a bundle of wires, rounded up to standard metric drill size
 
 function cable_bundle(cable) = //! Arrangement of a bundle in a flat cable clip
     [[0,0], [1,1], [2,1], [2, 0.5 + sin(60)], [2,2], [3, 0.5 + sin(60)], [3,2]][cable_wires(cable)];
@@ -49,11 +49,11 @@ function cable_height(cable) = cable_bundle(cable)[1] * cable_wire_size(cable);
 module mouse_hole(cable, h = 100, teardrop = false) { //! A mouse hole to allow a panel to go over a wire bundle.
     r = wire_hole_radius(cable);
 
-        if(teardrop)
-            vertical_tearslot(r = r, l = 2 * r, h = h, plus = true);
-        else
-            rotate(90)
-                slot(r, 2 * r, h = h);
+    if(teardrop)
+        vertical_tearslot(r = r, l = 2 * r, h = h, plus = true);
+    else
+        rotate(90)
+            slot(r, 2 * r, h = h);
 }
 
 module cable_tie_holes(cable_r, h = 100) { //! Holes to thread a ziptie through a panel to make a cable tie.