Merge branch 'psu_vents' of https://github.com/martinbudden/NopSCADlib into martinbudden-psu_vents

Extrusion bracket examples rotated for clearer view and made optional.
Added missing description for scs_bearing_blocks.
Extrusion no longer shows centre parameter but does show no default cornerHole.

libtest.scad

@@ -33,6 +33,7 @@ use <tests/components.scad>
 use <tests/d_connectors.scad>
 use <tests/displays.scad>
 use <tests/extrusions.scad>
+use <tests/extrusion_brackets.scad>
 use <tests/fans.scad>
 use <tests/fuseholder.scad>
 use <tests/geared_steppers.scad>
@@ -40,6 +41,7 @@ use <tests/hot_ends.scad>
 use <tests/iecs.scad>
 use <tests/inserts.scad>
 use <tests/jack.scad>
+use <tests/kp_pillow_blocks.scad>
 use <tests/leadnuts.scad>
 use <tests/leds.scad>
 use <tests/ldrs.scad>
@@ -60,8 +62,10 @@ use <tests/ring_terminals.scad>
 use <tests/rockers.scad>
 use <tests/rod.scad>
 use <tests/screws.scad>
+use <tests/scs_bearing_blocks.scad>
 use <tests/sealing_strip.scad>
 use <tests/sheets.scad>
+use <tests/sk_brackets.scad>
 use <tests/spades.scad>
 use <tests/springs.scad>
 use <tests/ssrs.scad>
@@ -83,18 +87,25 @@ use <tests/door_hinge.scad>
 use <tests/door_latch.scad>
 use <tests/fan_guard.scad>
 use <tests/fixing_block.scad>
+use <tests/flat_hinge.scad>
 use <tests/foot.scad>
 use <tests/handle.scad>
+use <tests/pcb_mount.scad>
+use <tests/printed_box.scad>
 use <tests/ribbon_clamp.scad>
 use <tests/screw_knob.scad>
 use <tests/socket_box.scad>
 use <tests/strap_handle.scad>
 use <tests/ssr_shroud.scad>
 use <tests/psu_shroud.scad>
-use <tests/flat_hinge.scad>
-use <tests/pcb_mount.scad>
 
-x5 = 800;
+x0 = 0;
+x1 = x0 + 100;
+x2 = x1 + 90;
+x3 = x2 + 130;
+x4 = x3 + 200;
+x5 = 850;
+x6 = x5 + 150;
 
 cable_grommets_y = 0;
 
@@ -133,13 +144,17 @@ translate([x5 + 60, cable_grommets_y + 200])
 translate([x5, cable_grommets_y + 250])
     handle();
 
-translate([900, 600])
+translate([950, 600])
     box_test();
 
+translate([890, 730])
+    printed_boxes();
+
+
 translate([850, 1260])
     bbox_test();
 
-x0 = 0;
+
 inserts_y = 0;
 nuts_y = inserts_y + 20;
 washers_y = nuts_y + 100;
@@ -204,10 +219,6 @@ translate([x0, linear_bearings_y]) {
     rods();
 }
 
-translate([x0+150, linear_bearings_y+30]) {
-    extrusions();
-}
-
 translate([x0 + 10, hot_ends_y])
     hot_ends();
 
@@ -236,7 +247,6 @@ translate([x0, psus_y]) {
     psu_shrouds();
 }
 
-x1 = x0 + 100;
 zipties_y = 0;
 bulldogs_y = zipties_y + 40;
 
@@ -246,7 +256,6 @@ translate([x1, zipties_y])
 translate([x1, bulldogs_y])
     bulldogs();
 
-x2 = x1 + 90;
 leds_y = 0;
 carriers_y = leds_y + 40;
 spades_y = carriers_y + 40;
@@ -293,8 +302,6 @@ translate([x2, toggles_y])
 translate([x2, components_y])
     components();
 
-
-x3 = x2 + 150;
 veroboard_y = 0;
 d_connectors_y = veroboard_y + 110;
 iecs_y = d_connectors_y + 80;
@@ -303,6 +310,7 @@ ssrs_y = modules_y + 80;
 blowers_y = ssrs_y + 60;
 batteries_y = blowers_y + 100;
 steppers_y = batteries_y + 70;
+extrusions_y = steppers_y + 100;
 
 translate([x3, veroboard_y])
     veroboard_test();
@@ -343,16 +351,22 @@ translate([x3, batteries_y])
 translate([x2, steppers_y])  // interloper
     stepper_motors();
 
+translate([x2, extrusions_y]) {
+    extrusions();
+}
+
 translate([x3, transformers_y])
     transformers();
 
 
-x4 = x3 + 220;
 belts_y = 0;
 rails_y = belts_y + 200;
-cable_strips_y = rails_y + 300;
+extrusion_brackets_y = rails_y + 250;
+sk_brackets_y = extrusion_brackets_y + 80;
+kp_pillow_blocks_y = sk_brackets_y + 50;
+scs_bearing_blocks_y = kp_pillow_blocks_y + 60;
 
-translate([x4 + 112, belts_y + 58]) {
+translate([x4 + 130, belts_y + 58]) {
     belt_test();
 
     translate([0, 60])
@@ -362,9 +376,22 @@ translate([x4 + 112, belts_y + 58]) {
 translate([x4, rails_y + 130])
     rails();
 
-translate([x4, cable_strips_y])
-    cable_strips();
+translate([780, 0])
+    rotate(90)
+        cable_strips();
+
+translate([x4, kp_pillow_blocks_y])
+    kp_pillow_blocks();
+
+translate([x4, sk_brackets_y])
+    sk_brackets();
+
+translate([x4, extrusion_brackets_y])
+    extrusion_brackets();
+
+translate([x4, scs_bearing_blocks_y])
+    scs_bearing_blocks();
+
 
-x6 = x5 + 150;
 translate([x6, 125])
     light_strips();

printed/printed_box.scad

@@ -0,0 +1,230 @@
+//
+// NopSCADlib Copyright Chris Palmer 2020
+// 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/>.
+//
+
+//
+//! A fully parametric 3D printed case that can be customised with cutouts and additions specified by children.
+//!
+//! The walls can be made wavy, which possibly reduces warping when printing and looks nice, however if holes need to be made
+//! in the sides you can't print a wavy bridge. Any holes need to be surrounded by a 45&deg; chamfer to make the bridges straight.
+//! See the mounting points for the feet in the first example.
+//!
+//! It can also have printed feet on the base with the screws doubling up to hold the base on.
+//
+include <../core.scad>
+include <../vitamins/screws.scad>
+use <../vitamins/insert.scad>
+use <foot.scad>
+
+function pbox_name(type)       = type[0]; //! Name to allow more than one box in a project
+function pbox_wall(type)       = type[1]; //! Wall thickness
+function pbox_top(type)        = type[2]; //! Top thickness
+function pbox_base(type)       = type[3]; //! Base thickness, can be zero for no base
+function pbox_foot(type)       = type[4]; //! Printed foot, can be false to suppress feet
+function pbox_base_screw(type) = type[5]; //! Screw type if no feet
+function pbox_radius(type)     = type[6]; //! Internal corner radius
+function pbox_ridges(type)     = type[7]; //! Ridge wavelength and amplitude
+function pbox_width(type)      = type[8]; //! Internal width
+function pbox_depth(type)      = type[9]; //! Internal depth
+function pbox_height(type)     = type[10]; //! Internal height
+
+base_outset = 1;    // How much the base overlaps the inner dimensions
+base_overlap = 2;   // The width of ledge the base sits on
+height_overlap = 1; // How far the edges sit below the base
+
+function pbox_inclusion(type) = pbox_base(type) ? base_overlap - base_outset : 0; //! How far the ledge for the base extends inwards
+
+function pbox_total_height(type) =  //! Total height including base overlap
+    let(base = pbox_base(type),
+        foot = pbox_foot(type),
+        washer = pbox_washer(type),
+        screw = pbox_screw(type))
+        pbox_height(type) + pbox_top(type) + base + (base ? height_overlap : 0) + (foot || !base ? 0 : washer_thickness(washer) + screw_head_height(screw));
+
+function pbox_screw(type) =         //! Foot screw if got feet else base_screw
+    let(foot = pbox_foot(type)) foot ? foot_screw(foot) : pbox_base_screw(type);
+
+function pbox_insert(type) = screw_insert(pbox_screw(type)); //! The insert for the base screws
+function pbox_washer(type) = screw_washer(pbox_screw(type)); //! The washer for the base screws
+
+function pbox_screw_length(type, panel_thickness = 0) =  //! Length of the base screw
+    let(foot = pbox_foot(type))
+        screw_shorter_than(pbox_base(type) + washer_thickness(pbox_washer(type))
+                            + insert_length(pbox_insert(type))
+                            + (foot ? foot_thickness(foot) : panel_thickness));
+
+function pbox_mid_offset(type) = pbox_ridges(type).y + pbox_wall(type) / 2; // Offset to wall midpoint
+
+function pbox_screw_inset(type) = //! How far the base screws are inset
+    let(foot = pbox_foot(type),
+        r = foot ? foot_diameter(foot) / 2 : washer_radius(pbox_washer(type)),
+        R =  pbox_radius(type)
+    ) max(r, R - (R - r) / sqrt(2));
+
+module pbox_screw_positions(type) {
+    foot = pbox_foot(type);
+    inset = pbox_screw_inset(type);
+    for(x = [-1, 1], y = [-1, 1])
+         translate([x * (pbox_width(type) / 2 - inset), y * (pbox_depth(type) / 2 - inset)])
+            rotate((y > 0 ? -x * 45 : -x * 135) + 90)
+                children();
+}
+
+module pbox_mid_shape(type) {
+    ridges = pbox_ridges(type);
+    offset = ridges.y + pbox_wall(type) / 2;
+    rad = pbox_radius(type) + offset;
+    w = pbox_width(type) + 2 * offset;
+    d = pbox_depth(type) + 2 * offset;
+
+    module waves(length) {
+        l = length - 2 * rad;
+
+        waves = round(l / ridges.x);
+        points = 16;
+        translate([-l / 2, ridges.y / 2])
+            polygon(concat([[0, -10]], [for(i = [0 : waves * points], a = 360 * i / points) [i * l / waves / points, -cos(a) * ridges.y / 2] ], [[l, -10]]));
+    }
+
+    difference() {
+        rounded_square([w, d], rad, center = true);
+
+        if(ridges.y)
+            for(side = [-1, 1]) {
+                translate([0,  side * d / 2])
+                    rotate(90 + side * 90)
+                        waves(w);
+
+                translate([side * w / 2, 0])
+                    rotate(side * 90)
+                        waves(d);
+            }
+     }
+}
+
+module pbox_inner_shape(type) {
+    rad = pbox_radius(type);
+    w = pbox_width(type);
+    d = pbox_depth(type);
+
+    rounded_square([w, d], rad, center = true);
+}
+
+module pbox_base(type) { //! Generate the STL for the base
+    stl(str(pbox_name(type),"_base"));
+    t = pbox_base(type);
+    difference() {
+        union() {
+            linear_extrude(height = t)
+                offset(base_outset - 0.2)
+                    pbox_inner_shape(type);
+
+            if($children > 0)
+                children(0);
+        }
+        pbox_screw_positions(type)
+            poly_cylinder(r = screw_clearance_radius(pbox_screw(type)), h = 2 * t + eps, center = true);
+
+        if($children > 1)
+            children(1);
+    }
+}
+
+module pbox(type) { //! Generate the STL for the main case
+    stl(pbox_name(type));
+
+    height = pbox_height(type);
+    total_height = pbox_total_height(type);
+    top_thickness = pbox_top(type);
+    wall = pbox_wall(type);
+    ledge_outset = pbox_ridges(type).y;
+    ledge_inset = base_outset - base_overlap;
+    ledge_h = pbox_base(type) ? (ledge_outset - ledge_inset) * 2 : 0;
+
+    difference() {
+        union() {
+            linear_extrude(height = total_height)
+                offset(wall / 2) pbox_mid_shape(type);
+
+            if($children > 2)
+                children(2);
+        }
+        difference() {
+            translate_z(top_thickness)
+                union() {
+                    linear_extrude(height = height + eps)
+                         offset(-wall / 2) pbox_mid_shape(type);
+
+                     translate_z(height)                                     // Recess for the base
+                        linear_extrude(height = total_height - height)
+                            offset(base_outset)
+                                pbox_inner_shape(type);
+                }
+            // Ledge to support the lid
+            if(ledge_h)
+                translate_z(top_thickness + height - ledge_h)
+                    difference() {
+                        rounded_rectangle([pbox_width(type) + 2 * outset, pbox_depth(type) + 2 * outset, ledge_h], 1, center = false);
+
+                        hull() {
+                            linear_extrude(height = ledge_h + eps)
+                                offset(ledge_inset)
+                                    pbox_inner_shape(type);
+
+                            linear_extrude(height = eps)
+                                offset(ledge_outset)
+                                     pbox_inner_shape(type);
+                        }
+                        pbox_screw_positions(type)
+                            insert_hole(pbox_insert(type));
+                    }
+
+            // Corner lugs for inserts
+            outset = wall + pbox_ridges(type).y;
+            or = pbox_radius(type) + outset;
+            inset = pbox_screw_inset(type) + outset;
+            br = insert_boss_radius(pbox_insert(type), wall);
+            ext = sqrt(2) * inset - or * (sqrt(2) - 1) - br;
+            translate_z(height + top_thickness)
+                pbox_screw_positions(type)
+                    insert_lug(pbox_insert(type), wall, counter_bore = 0, extension = ext, corner_r = or);
+
+            if($children > 0)
+                children(0);
+        }
+        if($children > 1)
+            children(1);
+    }
+}
+
+module pbox_inserts(type) //! Place the inserts for the base screws
+    translate_z(pbox_height(type) + pbox_top(type))
+        pbox_screw_positions(type)
+            insert(pbox_insert(type));
+
+module pbox_base_screws(type, thickness = 0)           //! Place the screws and feet
+    translate_z(pbox_height(type) + pbox_top(type) + pbox_base(type))
+        pbox_screw_positions(type) {
+            foot = pbox_foot(type);
+            if(foot)
+                color(pp4_colour)
+                    foot(foot);
+
+            translate_z(foot ? foot_thickness(foot) : thickness)
+                screw_and_washer(pbox_screw(type), pbox_screw_length(type, thickness));
+        }

readme.md

@@ -31,13 +31,13 @@ See [usage](docs/usage.md) for requirements, installation instructions and a usa
 <tr><td> <a href = "#Extrusion_brackets">Extrusion_brackets</a> </td><td> <a href = "#Ring_terminals">Ring_terminals</a> </td><td> <a href = "#Foot">Foot</a> </td><td> <a href = "#Rounded_cylinder">Rounded_cylinder</a> </td><td></td></tr>
 <tr><td> <a href = "#Extrusions">Extrusions</a> </td><td> <a href = "#Rockers">Rockers</a> </td><td> <a href = "#Handle">Handle</a> </td><td> <a href = "#Rounded_polygon">Rounded_polygon</a> </td><td></td></tr>
 <tr><td> <a href = "#Fans">Fans</a> </td><td> <a href = "#Rod">Rod</a> </td><td> <a href = "#Pcb_mount">Pcb_mount</a> </td><td> <a href = "#Sector">Sector</a> </td><td></td></tr>
-<tr><td> <a href = "#Fuseholder">Fuseholder</a> </td><td> <a href = "#Screws">Screws</a> </td><td> <a href = "#Psu_shroud">Psu_shroud</a> </td><td> <a href = "#Sweep">Sweep</a> </td><td></td></tr>
-<tr><td> <a href = "#Geared_steppers">Geared_steppers</a> </td><td> <a href = "#Scs_bearing_blocks">Scs_bearing_blocks</a> </td><td> <a href = "#Ribbon_clamp">Ribbon_clamp</a> </td><td> <a href = "#Thread">Thread</a> </td><td></td></tr>
-<tr><td> <a href = "#Green_terminals">Green_terminals</a> </td><td> <a href = "#Sealing_strip">Sealing_strip</a> </td><td> <a href = "#Screw_knob">Screw_knob</a> </td><td> <a href = "#Tube">Tube</a> </td><td></td></tr>
-<tr><td> <a href = "#Hot_ends">Hot_ends</a> </td><td> <a href = "#Sheets">Sheets</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 = "#Sk_brackets">Sk_brackets</a> </td><td> <a href = "#Ssr_shroud">Ssr_shroud</a> </td><td></td><td></td></tr>
-<tr><td> <a href = "#Iecs">Iecs</a> </td><td> <a href = "#Spades">Spades</a> </td><td> <a href = "#Strap_handle">Strap_handle</a> </td><td></td><td></td></tr>
-<tr><td> <a href = "#Inserts">Inserts</a> </td><td> <a href = "#Spools">Spools</a> </td><td></td><td></td><td></td></tr>
+<tr><td> <a href = "#Fuseholder">Fuseholder</a> </td><td> <a href = "#Screws">Screws</a> </td><td> <a href = "#Printed_box">Printed_box</a> </td><td> <a href = "#Sweep">Sweep</a> </td><td></td></tr>
+<tr><td> <a href = "#Geared_steppers">Geared_steppers</a> </td><td> <a href = "#Scs_bearing_blocks">Scs_bearing_blocks</a> </td><td> <a href = "#Psu_shroud">Psu_shroud</a> </td><td> <a href = "#Thread">Thread</a> </td><td></td></tr>
+<tr><td> <a href = "#Green_terminals">Green_terminals</a> </td><td> <a href = "#Sealing_strip">Sealing_strip</a> </td><td> <a href = "#Ribbon_clamp">Ribbon_clamp</a> </td><td> <a href = "#Tube">Tube</a> </td><td></td></tr>
+<tr><td> <a href = "#Hot_ends">Hot_ends</a> </td><td> <a href = "#Sheets">Sheets</a> </td><td> <a href = "#Screw_knob">Screw_knob</a> </td><td></td><td></td></tr>
+<tr><td> <a href = "#Hygrometer">Hygrometer</a> </td><td> <a href = "#Sk_brackets">Sk_brackets</a> </td><td> <a href = "#Socket_box">Socket_box</a> </td><td></td><td></td></tr>
+<tr><td> <a href = "#Iecs">Iecs</a> </td><td> <a href = "#Spades">Spades</a> </td><td> <a href = "#Ssr_shroud">Ssr_shroud</a> </td><td></td><td></td></tr>
+<tr><td> <a href = "#Inserts">Inserts</a> </td><td> <a href = "#Spools">Spools</a> </td><td> <a href = "#Strap_handle">Strap_handle</a> </td><td></td><td></td></tr>
 <tr><td> <a href = "#Jack">Jack</a> </td><td> <a href = "#Springs">Springs</a> </td><td></td><td></td><td></td></tr>
 <tr><td> <a href = "#Kp_pillow_blocks">Kp_pillow_blocks</a> </td><td> <a href = "#Ssrs">Ssrs</a> </td><td></td><td></td><td></td></tr>
 <tr><td> <a href = "#Ldrs">Ldrs</a> </td><td> <a href = "#Stepper_motors">Stepper_motors</a> </td><td></td><td></td><td></td></tr>
@@ -626,10 +626,10 @@ Brackets for joining extrusions at a corner.
 ### Vitamins
 | Qty | Module call | BOM entry |
 | ---:|:--- |:---|
-|   1 | ```extrusion(E2020, 20, false)``` |  Extrusion E2020 x 20mm |
-|   1 | ```extrusion(E2020, 30, false)``` |  Extrusion E2020 x 30mm |
-|   1 | ```extrusion(E2020, 40, false)``` |  Extrusion E2020 x 40mm |
-|   1 | ```extrusion(E2020, 50, false)``` |  Extrusion E2020 x 50mm |
+|   1 | ```extrusion(E2020, 20)``` |  Extrusion E2020 x 20mm |
+|   1 | ```extrusion(E2020, 30)``` |  Extrusion E2020 x 30mm |
+|   1 | ```extrusion(E2020, 40)``` |  Extrusion E2020 x 40mm |
+|   1 | ```extrusion(E2020, 50)``` |  Extrusion E2020 x 50mm |
 |   2 | ```extrusion_corner_bracket(E20_corner_bracket)``` |  Extrusion corner bracket 20 |
 |   2 | ```extrusion_inner_corner_bracket(E20_inner_corner_bracket, true)``` |  Extrusion inner corner bracket 4.5 |
 |   1 | ```extrusion_inner_corner_bracket(E20_inner_corner_bracket, false)``` |  Extrusion inner corner bracket 4.5 |
@@ -669,21 +669,21 @@ Aluminium  extrusion.
 ### Modules
 | Module | Description |
 |:--- |:--- |
-| ```extrusion(type, length, center = false, cornerHole = false)``` | Draw the specified extrusion |
+| ```extrusion(type, length, center = true, cornerHole = false)``` | Draw the specified extrusion |
 
 ![extrusions](tests/png/extrusions.png)
 
 ### Vitamins
 | Qty | Module call | BOM entry |
 | ---:|:--- |:---|
-|   1 | ```extrusion(E2020, 80, false)``` |  Extrusion E2020 x 80mm |
-|   1 | ```extrusion(E2040, 80, false)``` |  Extrusion E2040 x 80mm |
-|   1 | ```extrusion(E2060, 80, false)``` |  Extrusion E2060 x 80mm |
-|   1 | ```extrusion(E2080, 80, false)``` |  Extrusion E2080 x 80mm |
-|   1 | ```extrusion(E3030, 80, false)``` |  Extrusion E3030 x 80mm |
-|   1 | ```extrusion(E3060, 80, false)``` |  Extrusion E3060 x 80mm |
-|   1 | ```extrusion(E4040, 80, false)``` |  Extrusion E4040 x 80mm |
-|   1 | ```extrusion(E4080, 80, false)``` |  Extrusion E4080 x 80mm |
+|   1 | ```extrusion(E2020, 80)``` |  Extrusion E2020 x 80mm |
+|   1 | ```extrusion(E2040, 80)``` |  Extrusion E2040 x 80mm |
+|   1 | ```extrusion(E2060, 80)``` |  Extrusion E2060 x 80mm |
+|   1 | ```extrusion(E2080, 80)``` |  Extrusion E2080 x 80mm |
+|   1 | ```extrusion(E3030, 80)``` |  Extrusion E3030 x 80mm |
+|   1 | ```extrusion(E3060, 80)``` |  Extrusion E3060 x 80mm |
+|   1 | ```extrusion(E4040, 80)``` |  Extrusion E4040 x 80mm |
+|   1 | ```extrusion(E4080, 80)``` |  Extrusion E4080 x 80mm |
 
 
 <a href="#top">Top</a>
@@ -2008,15 +2008,13 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |   1 | ```pcb(RPI0)``` |  Raspberry Pi Zero |
 |  16 | ```screw(M2_cap_screw, 25)``` |  Screw M2 cap x 25mm |
 |   4 | ```screw(M2p5_cap_screw, 16)``` |  Screw M2.5 cap x 16mm |
-|   8 | ```screw(M2p5_cap_screw, 20)``` |  Screw M2.5 cap x 20mm |
-|   4 | ```screw(M2p5_cap_screw, 35)``` |  Screw M2.5 cap x 35mm |
-|   8 | ```screw(M2p5_pan_screw, 20)``` |  Screw M2.5 pan x 20mm |
-|   4 | ```screw(M2p5_pan_screw, 25)``` |  Screw M2.5 pan x 25mm |
+|  12 | ```screw(M2p5_cap_screw, 20)``` |  Screw M2.5 cap x 20mm |
+|   4 | ```screw(M2p5_pan_screw, 20)``` |  Screw M2.5 pan x 20mm |
+|   8 | ```screw(M2p5_pan_screw, 25)``` |  Screw M2.5 pan x 25mm |
 |   4 | ```screw(M2p5_pan_screw, 35)``` |  Screw M2.5 pan x 35mm |
 |   8 | ```screw(M3_cap_screw, 30)``` |  Screw M3 cap x 30mm |
 |   4 | ```screw(M3_cap_screw, 35)``` |  Screw M3 cap x 35mm |
-|   4 | ```screw(M4_cap_screw, 30)``` |  Screw M4 cap x 30mm |
-|   8 | ```screw(M4_cap_screw, 35)``` |  Screw M4 cap x 35mm |
+|  12 | ```screw(M4_cap_screw, 35)``` |  Screw M4 cap x 35mm |
 |   3 | ```terminal_35(2)``` |  Terminal block 2 way 3.5mm |
 |   2 | ```green_terminal(gt_2p54, 4)``` |  Terminal block 4 way 0.1" |
 |   1 |  |  USB A to Mini B lead |
@@ -2029,24 +2027,24 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 ### Printed
 | Qty | Filename |
 | ---:|:--- |
-|   4 | pcb_spacer20130.stl |
 |   4 | pcb_spacer20140.stl |
 |   4 | pcb_spacer20150.stl |
 |   4 | pcb_spacer20160.stl |
-|   4 | pcb_spacer25100_2.stl |
+|   4 | pcb_spacer20170.stl |
+|   4 | pcb_spacer25100.stl |
 |   4 | pcb_spacer25110_2.stl |
 |   4 | pcb_spacer25120_2.stl |
-|   4 | pcb_spacer25230.stl |
+|   4 | pcb_spacer25130_2.stl |
 |   4 | pcb_spacer25240.stl |
-|   4 | pcb_spacer2570.stl |
+|   4 | pcb_spacer2550.stl |
 |   4 | pcb_spacer2580.stl |
 |   4 | pcb_spacer2590.stl |
-|   4 | pcb_spacer30170.stl |
 |   4 | pcb_spacer30180.stl |
-|   4 | pcb_spacer30220.stl |
-|   4 | pcb_spacer40190.stl |
+|   4 | pcb_spacer30190.stl |
+|   4 | pcb_spacer30230.stl |
 |   4 | pcb_spacer40200.stl |
 |   4 | pcb_spacer40210.stl |
+|   4 | pcb_spacer40220.stl |
 
 
 <a href="#top">Top</a>
@@ -2603,6 +2601,9 @@ Machine screws and wood screws with various head styles.
 ---
 <a name="Scs_bearing_blocks"></a>
 ## Scs_bearing_blocks
+SCSnUU and SCSnLUU bearing blocks
+
+
 [vitamins/scs_bearing_blocks.scad](vitamins/scs_bearing_blocks.scad) Object definitions.
 
 [vitamins/scs_bearing_block.scad](vitamins/scs_bearing_block.scad) Implementation.
@@ -2784,8 +2785,8 @@ SK shaft support brackets
 ### Vitamins
 | Qty | Module call | BOM entry |
 | ---:|:--- |:---|
-|   2 | ```extrusion(E2020, 20, false)``` |  Extrusion E2020 x 20mm |
-|   2 | ```extrusion(E3030, 20, false)``` |  Extrusion E3030 x 20mm |
+|   2 | ```extrusion(E2020, 20)``` |  Extrusion E2020 x 20mm |
+|   2 | ```extrusion(E3030, 20)``` |  Extrusion E3030 x 20mm |
 |   2 | ```sliding_t_nut(M4_hammer_nut)``` |  Nut M4 hammer |
 |   2 | ```sliding_t_nut(M4_sliding_t_nut)``` |  Nut M4 sliding T |
 |   2 | ```sliding_t_nut(M5_sliding_t_nut)``` |  Nut M5 sliding T |
@@ -3019,15 +3020,16 @@ NEMA stepper motor model.
 ### Vitamins
 | Qty | Module call | BOM entry |
 | ---:|:--- |:---|
-|  24 | ```screw(M3_pan_screw, 8)``` |  Screw M3 pan x  8mm |
+|   4 | ```ring_terminal(M3_ringterm)``` |  Ring terminal 3mm |
+|  15 | ```screw(M3_pan_screw, 8)``` |  Screw M3 pan x  8mm |
 |   1 | ```NEMA(NEMA14)``` |  Stepper motor NEMA14 x 36mm |
 |   1 | ```NEMA(NEMA16)``` |  Stepper motor NEMA16 x 19.2mm |
 |   1 | ```NEMA(NEMA17S)``` |  Stepper motor NEMA17 x 34mm |
 |   1 | ```NEMA(NEMA17M)``` |  Stepper motor NEMA17 x 40mm |
 |   1 | ```NEMA(NEMA17)``` |  Stepper motor NEMA17 x 47mm |
 |   1 | ```NEMA(NEMA23)``` |  Stepper motor NEMA22 x 51.2mm |
-|  24 | ```washer(M3_washer)``` |  Washer  M3 x 7mm x 0.5mm |
-|  24 | ```star_washer(M3_washer)``` |  Washer star M3 x 0.5mm |
+|  11 | ```washer(M3_washer)``` |  Washer  M3 x 7mm x 0.5mm |
+|  15 | ```star_washer(M3_washer)``` |  Washer star M3 x 0.5mm |
 
 
 <a href="#top">Top</a>
@@ -4293,6 +4295,87 @@ The stl must be given a parameterless wrapper in the project that uses it.
 |   1 | pcb_mount_PI_IO_5.stl |
 
 
+<a href="#top">Top</a>
+
+---
+<a name="Printed_box"></a>
+## Printed_box
+A fully parametric 3D printed case that can be customised with cutouts and additions specified by children.
+
+The walls can be made wavy, which possibly reduces warping when printing and looks nice, however if holes need to be made
+in the sides you can't print a wavy bridge. Any holes need to be surrounded by a 45&deg; chamfer to make the bridges straight.
+See the mounting points for the feet in the first example.
+
+It can also have printed feet on the base with the screws doubling up to hold the base on.
+
+
+[printed/printed_box.scad](printed/printed_box.scad) Implementation.
+
+[tests/printed_box.scad](tests/printed_box.scad) Code for this example.
+
+### Properties
+| Function | Description |
+|:--- |:--- |
+| ```pbox_base(type)``` | Base thickness, can be zero for no base |
+| ```pbox_base_screw(type)``` | Screw type if no feet |
+| ```pbox_depth(type)``` | Internal depth |
+| ```pbox_foot(type)``` | Printed foot, can be false to suppress feet |
+| ```pbox_height(type)``` | Internal height |
+| ```pbox_name(type)``` | Name to allow more than one box in a project |
+| ```pbox_radius(type)``` | Internal corner radius |
+| ```pbox_ridges(type)``` | Ridge wavelength and amplitude |
+| ```pbox_top(type)``` | Top thickness |
+| ```pbox_wall(type)``` | Wall thickness |
+| ```pbox_width(type)``` | Internal width |
+
+### Functions
+| Function | Description |
+|:--- |:--- |
+| ```pbox_inclusion(type)``` | How far the ledge for the base extends inwards |
+| ```pbox_insert(type)``` | The insert for the base screws |
+| ```pbox_screw(type)``` | Foot screw if got feet else base_screw |
+| ```pbox_screw_inset(type)``` | How far the base screws are inset |
+| ```pbox_screw_length(type, panel_thickness = 0)``` | Length of the base screw |
+| ```pbox_total_height(type)``` | Total height including base overlap |
+| ```pbox_washer(type)``` | The washer for the base screws |
+
+### Modules
+| Module | Description |
+|:--- |:--- |
+| ```pbox(type)``` | Generate the STL for the main case |
+| ```pbox_base(type)``` | Generate the STL for the base |
+| ```pbox_base_screws(type, thickness = 0)``` | Place the screws and feet |
+| ```pbox_inserts(type)``` | Place the inserts for the base screws |
+
+![printed_box](tests/png/printed_box.png)
+
+### Vitamins
+| Qty | Module call | BOM entry |
+| ---:|:--- |:---|
+|   4 | ```insert(F1BM)``` |  Heatfit insert M2 |
+|   4 | ```insert(F1BM3)``` |  Heatfit insert M3 |
+|   4 | ```screw(M2_cap_screw, 6)``` |  Screw M2 cap x  6mm |
+|   3 | ```screw(M3_pan_screw, 6)``` |  Screw M3 pan x  6mm |
+|   4 | ```screw(M3_pan_screw, 10)``` |  Screw M3 pan x 10mm |
+|   4 | ```washer(M2_washer)``` |  Washer  M2 x 5mm x 0.3mm |
+|   7 | ```washer(M3_washer)``` |  Washer  M3 x 7mm x 0.5mm |
+
+### Printed
+| Qty | Filename |
+| ---:|:--- |
+|   1 | box1.stl |
+|   1 | box1_base.stl |
+|   7 | foot.stl |
+|   1 | smooth_box.stl |
+|   1 | smooth_box_base.stl |
+
+### Assemblies
+| Qty | Name |
+| ---:|:--- |
+|   1 | box1_assembly |
+|   1 | box2_assembly |
+
+
 <a href="#top">Top</a>
 
 ---
@@ -4332,23 +4415,25 @@ The stl and assembly must be given a name and parameterless wrappers for the stl
 ### Vitamins
 | Qty | Module call | BOM entry |
 | ---:|:--- |:---|
-|   4 | ```insert(F1BM3)``` |  Heatfit insert M3 |
-|   4 | ```screw(M3_cap_screw, 10)``` |  Screw M3 cap x 10mm |
-|   4 | ```washer(M3_washer)``` |  Washer  M3 x 7mm x 0.5mm |
-|   4 | ```star_washer(M3_washer)``` |  Washer star M3 x 0.5mm |
-|   2 | ```ziptie(small_ziptie, 3)``` |  Ziptie 2.5mm x 100mm min length |
+|   6 | ```insert(F1BM3)``` |  Heatfit insert M3 |
+|   6 | ```screw(M3_cap_screw, 10)``` |  Screw M3 cap x 10mm |
+|   6 | ```washer(M3_washer)``` |  Washer  M3 x 7mm x 0.5mm |
+|   6 | ```star_washer(M3_washer)``` |  Washer star M3 x 0.5mm |
+|   3 | ```ziptie(small_ziptie, 3)``` |  Ziptie 2.5mm x 100mm min length |
 
 ### Printed
 | Qty | Filename |
 | ---:|:--- |
 |   1 | psu_shroud_PD_150_12.stl |
 |   1 | psu_shroud_S_250_48.stl |
+|   1 | psu_shroud_S_300_12.stl |
 
 ### Assemblies
 | Qty | Name |
 | ---:|:--- |
 |   1 | psu_shroud_PD_150_12_assembly |
 |   1 | psu_shroud_S_250_48_assembly |
+|   1 | psu_shroud_S_300_12_assembly |
 
 
 <a href="#top">Top</a>

scripts/views.py

@@ -71,9 +71,10 @@ def bom_to_assemblies(bom_dir, bounds_map):
     #
     # Remove the main assembly if it is a shell
     #
-    ass =  flat_bom[-1]
-    if len(ass["assemblies"]) < 2 and not ass["vitamins"] and not ass["printed"] and not ass["routed"]:
-        flat_bom = flat_bom[:-1]
+    if flat_bom:
+        ass =  flat_bom[-1]
+        if len(ass["assemblies"]) < 2 and not ass["vitamins"] and not ass["printed"] and not ass["routed"]:
+            flat_bom = flat_bom[:-1]
     return [assembly["name"] for  assembly in flat_bom]
 
 def eop(print_mode, doc_file, last = False, first = False):

tests/extrusion_brackets.scad

@@ -23,7 +23,7 @@ include <../vitamins/extrusions.scad>
 include <../vitamins/washers.scad>
 include <../vitamins/nuts.scad>
 
-module extrusion_brackets() {
+module extrusion_brackets(examples = false) {
     extrusion_inner_corner_bracket(E20_inner_corner_bracket);
 
     translate([30, 0])
@@ -34,27 +34,32 @@ module extrusion_brackets() {
 
     eWidth = extrusion_width(E2020);
 
-    translate([0, 60]) {
-        extrusion_inner_corner_bracket(E20_inner_corner_bracket);
-        translate([-eWidth / 2, 0, 0])
-            rotate([-90, 0, 0])
-                extrusion(E2020, 20);
-        translate([-eWidth, -eWidth / 2, 0])
-            rotate([0, 90, 0])
-                extrusion(E2020, 40);
-    }
+    if(examples) {
+        translate([20, 60, 10]) rotate([90, 0, 180]) {
+            extrusion_inner_corner_bracket(E20_inner_corner_bracket);
 
-    translate([60, 60]) {
-        extrusion_corner_bracket_assembly(E20_corner_bracket);
-        translate([-eWidth / 2, 0, 0])
-            rotate([-90, 0, 0])
-                extrusion(E2020, 30);
-        translate([-eWidth, -eWidth / 2, 0])
-            rotate([0, 90, 0])
-                extrusion(E2020, 50);
+            translate([-eWidth / 2, 0, 0])
+                rotate([-90, 0, 0])
+                    extrusion(E2020, 20, false);
+
+            translate([-eWidth, -eWidth / 2, 0])
+                rotate([0, 90, 0])
+                    extrusion(E2020, 40, false);
+        }
+
+        translate([100, 60, 10]) rotate([90, 0, 180]) {
+            extrusion_corner_bracket_assembly(E20_corner_bracket);
+
+            translate([-eWidth / 2, 0, 0])
+                rotate([-90, 0, 0])
+                    extrusion(E2020, 30, false);
+
+            translate([-eWidth, -eWidth / 2, 0])
+                rotate([0, 90, 0])
+                    extrusion(E2020, 50, false);
+        }
     }
 }
 
 if($preview)
-    let($show_threads = true)
-        extrusion_brackets();
+    extrusion_brackets(true);

tests/printed_box.scad

@@ -0,0 +1,167 @@
+//
+// NopSCADlib Copyright Chris Palmer 2020
+// 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 <../core.scad>
+include <../vitamins/screws.scad>
+use <../printed/foot.scad>
+use <../printed/printed_box.scad>
+
+foot = [13, 5, 2, 1, M3_pan_screw, 10];
+module foot_stl() foot(foot);
+
+wall = 2;
+top_thickness = 2;
+base_thickness = 2;
+case_inner_rad = 8;
+
+width = 80;
+depth = 45;
+height = 40;
+
+box1 = ["box1",  wall, top_thickness, base_thickness, false, M2_cap_screw, case_inner_rad, [8, 1], width,  depth, height];
+box2 = ["smooth_box", wall, top_thickness, base_thickness, foot,  false,        case_inner_rad, [0, 0], width,  depth, height];
+
+module box1_feet_positions() {
+    clearance = 2;
+    foot_r = foot_diameter(foot) / 2;
+    x_inset = case_inner_rad + foot_r - pbox_ridges(box1).y;
+    z_inset = foot_r + clearance;
+    h = height + base_thickness;
+
+    for(p = [[-1, -1], [1, -1], [0, 1]])
+        translate([p.x * (width / 2 - x_inset), depth / 2 + wall + pbox_ridges(box1).y, top_thickness + h / 2 + p.y * (h / 2 - z_inset)])
+            rotate([90, 0, 0])
+                children();
+}
+
+module box1_internal_additions() {
+    d = washer_diameter(screw_washer(foot_screw(foot))) + 1;
+    h = pbox_ridges(box1).y;
+    box1_feet_positions()
+        translate_z(wall - eps)
+            cylinder(d2 = d, d1 = d + 2 * h, h = h);
+
+}
+
+module box1_external_additions() {
+    amp = pbox_ridges(box1).y + eps;
+    d = foot_diameter(foot) + 1;
+    box1_feet_positions()
+        cylinder(d1 = d, d2 = d + 2 * amp, h = amp);
+}
+
+module box1_holes() {
+    box1_feet_positions()
+        teardrop(r = screw_pilot_hole(foot_screw(foot)), h = 10, center = true);
+}
+
+
+module box1_case_stl() {
+     pbox(box1) {
+        box1_internal_additions();
+        box1_holes();
+        box1_external_additions();
+     }
+}
+
+module box1_base_additions() {
+}
+
+module box1_base_holes() {
+}
+
+module box1_base_stl()
+    pbox_base(box1) {
+        box1_base_additions();
+        box1_base_holes();
+    }
+
+module box1_assembly()
+assembly("box1") {
+    color(pp1_colour) render() box1_case_stl();
+
+    pbox_inserts(box1);
+
+    pbox_base_screws(box1);
+
+    box1_feet_positions() {
+        foot_assembly(0, foot);
+
+        vflip()
+            translate_z(foot_thickness(foot))
+                screw_and_washer(foot_screw(foot), 6);
+    }
+
+    translate_z(height + top_thickness + base_thickness + eps) vflip()
+         %render() box1_base_stl();
+}
+
+module box2_internal_additions() {
+}
+
+module box2_holes() {
+}
+
+module box2_external_additions() {
+}
+
+module box2_case_stl() {
+    pbox(box2) {
+        box2_internal_additions();
+        box2_holes();
+        box2_external_additions();
+    }
+}
+
+module box2_base_additions() {
+}
+
+module box2_base_holes() {
+}
+
+module box2_base_stl()
+    pbox_base(box2) {
+        box2_base_additions();
+        box2_base_holes();
+    }
+
+module box2_assembly()
+assembly("box2") {
+    color(pp1_colour) render() box2_case_stl();
+
+    pbox_inserts(box2);
+
+    pbox_base_screws(box2);
+
+    translate_z(height + top_thickness + base_thickness + eps) vflip()
+         %render() box2_base_stl();
+}
+
+
+module printed_boxes() {
+    rotate(180)
+        box1_assembly();
+
+    translate([100, 0])
+        box2_assembly();
+
+}
+
+if($preview)
+    printed_boxes();

tests/scs_bearing_blocks.scad

@@ -22,7 +22,7 @@ use <../utils/layout.scad>
 include <../vitamins/scs_bearing_blocks.scad>
 
 module scs_bearing_blocks()
-    layout([for(s = scs_bearing_blocks) 2 * scs_size(s)[0]]) {
+    layout([for(s = scs_bearing_blocks) scs_size(s).x], 10) {
         part_thickness = 5;
         scs_bearing_block_assembly(scs_bearing_blocks[$i], part_thickness);
 

tests/sk_brackets.scad

@@ -31,10 +31,9 @@ module sk_brackets() {
         sk_bracket_assembly(sk_brackets[$i], screw_type = screws[$i], nut_type = nuts[$i], max_screw_depth = depths[$i]);
         translate([0, -sk_hole_offset(sk_brackets[$i]) - extrusion_width($i < 2 ? E2020 : E3030) / 2, 0])
             rotate([0, 90, 0])
-                extrusion($i < 2 ? E2020 : E3030, 20);
+                extrusion($i < 2 ? E2020 : E3030, 20, false);
     }
 }
 
 if($preview)
-    let($show_threads = true)
-        sk_brackets();
+    sk_brackets();

tests/stepper_motors.scad

@@ -27,8 +27,10 @@ module stepper_motors()
         rotate(180)
             NEMA(stepper_motors[$i]);
 
-        NEMA_screws(stepper_motors[$i], M3_pan_screw);
+        translate_z(4)
+            NEMA_screws(stepper_motors[$i], M3_pan_screw, n = $i, earth = $i > 4 ? undef : $i - 1);
     }
 
 if($preview)
-    stepper_motors();
+    let($show_threads = 1)
+        stepper_motors();

vitamins/extrusion.scad

@@ -117,12 +117,11 @@ module extrusion_cross_section(type, cornerHole) {
                 extrusion_center_section(type);
 }
 
-module extrusion(type, length, center = false, cornerHole = false) { //! Draw the specified extrusion
+module extrusion(type, length, center = true, cornerHole = false) { //! Draw the specified extrusion
 
-    vitamin(str("extrusion(", type[0], ", ", length, ", ", center, "): Extrusion ", type[0], " x ", length, "mm"));
+    vitamin(str("extrusion(", type[0], ", ", length, arg(cornerHole, false, "cornerHole"), "): Extrusion ", type[0], " x ", length, "mm"));
 
     color(grey90)
         linear_extrude(length, center = center)
             extrusion_cross_section(type, cornerHole);
 }
-

vitamins/extrusion_bracket.scad

@@ -70,7 +70,6 @@ function extrusion_corner_bracket_side_thickness(type)   = type[3]; //! Thicknes
 function extrusion_corner_bracket_hole_offset(type)      = type[4]; //! Hole offset from corner
 
 module extrusion_corner_bracket(type) { //! Corner bracket for extrusion
-echo(type=type);
     vitamin(str("extrusion_corner_bracket(", type[0], "): Extrusion corner bracket ", type[1].z));
 
     eSize = extrusion_corner_bracket_size(type).z;

vitamins/pcbs.scad

@@ -352,6 +352,6 @@ RAMPSEndstop = ["RAMPSEndstop", "RAMPS Endstop Switch",
     []];
 
 
-pcbs = [ExtruderPCB, PI_IO, RPI0, EnviroPlus, RPI3, ArduinoUno3, ArduinoLeonardo, Keyes5p1, PERF80x20, PERF70x50, PERF70x30, PERF60x40, PERF74x51, PSU12V1A, DuetE, Duex2, Duex5, Melzi, ZC_A0591, RAMPSEndstop];
+pcbs = [RAMPSEndstop, ExtruderPCB, PI_IO, RPI0, EnviroPlus, RPI3, ArduinoUno3, ArduinoLeonardo, Keyes5p1, PERF80x20, PERF70x50, PERF70x30, PERF60x40, PERF74x51, PSU12V1A, DuetE, Duex2, Duex5, Melzi, ZC_A0591];
 
 use <pcb.scad>

vitamins/psu.scad

@@ -39,6 +39,7 @@ function psu_face_grill(type)        = type[3];     //! Is this face a grill
 function psu_face_fan(type)          = type[4];     //! Fan x,y position and type
 function psu_face_iec(type)          = type[5];     //! IEC connector x,y, rotation and type
 function psu_face_switch(type)       = type[6];     //! Rocker switch x,y, rotation and type
+function psu_face_vents(type)        = type[7];     //! Vents array position x,y, rotation, size and corner radius
 
 function psu_name(type)              = type[1];     //! The part name
 function psu_length(type)            = type[2];     //! Length
@@ -166,6 +167,7 @@ module psu(type) { //! Draw a power supply
             fan = psu_face_fan(f);
             iec = psu_face_iec(f);
             switch = psu_face_switch(f);
+            vents = psu_face_vents(f);
 
             multmatrix(psu_face_transform(type, i))
                 translate([xo, 0, -t]) {
@@ -208,6 +210,14 @@ module psu(type) { //! Draw a power supply
                                     translate([switch.x, switch.y])
                                         rotate(switch.z)
                                             rocker_hole(switch[3], 0);
+                                if(vents)
+                                    for(i = [0 : len(vents) - 1]) {
+                                        // vent is of form: [ [pos.x, pos.y, angle], [size.x, size.y], corner radius ]
+                                        vent = vents[i];
+                                        translate([vent[0].x, vent[0].y])
+                                            rotate(vent[0].z)
+                                                rounded_square(vent[1], vent[2]-eps, center = true);
+                                    }
                              }
                         }
 
@@ -259,23 +269,26 @@ module psu(type) { //! Draw a power supply
                             square(16, center = true);
                     }
 
-        // earth strap
         tab_w = w / 2 + cutout[2].x;
-        color("silver")
-            translate([-l / 2, w / 2 - tab_w, z])
-                cube([left, tab_w - bt, lt]);
-
-        // Earth pilar and screw
-        earth_inset = 4.5;
-        earth_d = 5;
-        translate([-l / 2 + earth_inset, w / 2 - tab_w / 2]) {
+        // if the cutout is too wide, then don't draw earth strap, pillar and screw
+        if (tab_w - bt > 0) {
+            // earth strap
             color("silver")
-                cylinder(d = earth_d, h = z - pcb_thickness);
+                translate([-l / 2, w / 2 - tab_w, z])
+                    cube([left, tab_w - bt, lt]);
 
-            translate_z(z + lt)
-                not_on_bom() no_explode()
-                    spring_washer(M3_washer)
-                        screw(M3_pan_screw, 8);
+            // Earth pillar and screw
+            earth_inset = 4.5;
+            earth_d = 5;
+            translate([-l / 2 + earth_inset, w / 2 - tab_w / 2]) {
+                color("silver")
+                    cylinder(d = earth_d, h = z - pcb_thickness);
+
+                translate_z(z + lt)
+                    not_on_bom() no_explode()
+                        spring_washer(M3_washer)
+                            screw(M3_pan_screw, 8);
+            }
         }
 
         // terminal block

vitamins/psus.scad

@@ -83,15 +83,95 @@ KY240W =
 // This PSU, and ones very like it, are sold by LulzBot, and various sellers on eBay.
 // The screw layout specified here uses the inner set of screw-mounts on the PSU, which are M4.
 // The outer set don't appear to be M3, even though the datasheet claims they are.
-S_300_12 =
-    ["S_300_12", "S-300-12", 215, 115, 50, M4_cap_screw, M4_clearance_radius, false, 0, 0, [],
-        [  [[[ 215 / 2 - 32.5,  115 / 2 - 82.5],
-            [ 215 / 2 - 32.5,  115 / 2 - 32.5],
-            [ 215 / 2 - 182.5, 115 / 2 - 82.5],
-            [ 215 / 2 - 182.5, 115 / 2 - 32.5]]]
+S_300_12 = [
+    "S_300_12",
+    "S-300-12",// part name
+    215, 115, 50,// length, width, height
+    M4_cap_screw, M4_clearance_radius,// screw type and clearance
+    false,// true if ATX style
+    13,// terminals bay depth
+    0,// heatsink bay depth
+    [// terminals
+        9,// count
+        18,// y offset
+        st_terminals
+    ],
+    // faces
+    [
+        [// f_bottom, bottom
+            [// holes
+                [215/2 - 32.5, 115/2 - 82.5], [215/2 - 32.5, 115/2 - 32.5], [215/2 - 182.5, 115/2 - 82.5], [215/2 - 182.5, 115/2 - 32.5]
+            ],
+            1.5,// thickness
+            [],// cutouts
+            false,// grill
+            [],[],[],// fan, iec, rocker
+            [// vents
+                // [ [pos.x, pos.y, angle], [size.x, size.y], corner radius ]
+                for(x = [0:21], y = [-1,1]) [ [-7*x+215/2-34, (115/2-5)*y, 0], [3, 25], 1.5 ]
+            ]
         ],
-       []
-    ];
+        [// f_top, top
+            [],// holes
+            0.5,// thickness
+            [],// coutouts
+            false,// grill
+            [215/2 - 47.5, 115/2 - 37.5, fan50x15],
+            [],//iec
+            [],//rocker
+            [// vents
+                for(x = [0:4], y = [-1,1]) [ [-7*x-215/2+48, 28*y, 0], [3, 25], 1.5 ]
+            ]
+        ],
+        [// f_left, front (terminals) after rotation
+            [],// holes
+            0.5,// thickness
+            [// cutouts
+                [
+                [-56, -25], [-56, -17],
+                [-60, -17], [-60, 0],
+                [115/2, 0], [115/2, -25]
+                ]
+            ],
+            false,// grill
+        ],
+        [// f_right, back after rotation
+            [], // holes
+            1.5,// thickness
+            [],// cutouts
+            false,// grill
+        ],
+        [// f_front, right after rotation
+            [// holes, offset from center
+                [215/2 -  32.5,-15], [215/2 - 182.5,-15],
+                [215/2 -  32.5, 10], [215/2 - 182.5, 10]
+            ],
+            1.5,// thickness
+            [],// cutouts
+            false,// grill
+            [],[],[],// fan, iec, rocker
+            [// vents
+                for(x = [0 : 21]) [ [-7*x+215/2-34, -25, 0], [3, 10], 1.5 ],
+                for(x = [0 :  1]) [ [-7*x, -1, 0], [3, 25], 1.5 ],
+                for(x = [0 :  2]) [ [-7*x-215/2+20, -1, 0], [3, 25], 1.5 ],
+            ]
+        ],
+        [// f_back, left after rotation
+            [// holes, offset from center
+                [215/2 - 32.5 - 13/2, 15], [215/2 - 182.5 - 13/2, 15]
+            ],
+            1.5,// thickness
+            [],// cutouts
+            false,// grill
+            [],[],[],// fan, iec, rocker
+            [// vents
+                for(x = [0 : 21]) [ [-7*x+215/2-34-13/2, 25, 0], [3, 10], 1.5 ]
+            ]
+        ],
+    ],
+    // accessories to add to BOM
+    []
+];
 
 External =
     ["External", "X Box", 0, 0, 0, false, false, false, 0, 0, [],
@@ -102,3 +182,4 @@ External =
 psus = [PD_150_12, S_250_48, ATX500, KY240W, S_300_12];
 
 use <psu.scad>
+

vitamins/scs_bearing_block.scad

@@ -18,7 +18,7 @@
 //
 
 //
-// SCSnUU and SCSnLUU bearing blocks
+//! SCSnUU and SCSnLUU bearing blocks
 //
 
 

vitamins/stepper_motor.scad

@@ -26,6 +26,7 @@ include <screws.scad>
 use <washer.scad>
 include <ring_terminals.scad>
 use <../utils/tube.scad>
+use <../utils/thread.scad>
 use <rod.scad>
 
 function NEMA_width(type)       = type[1]; //! Width of the square face
@@ -60,6 +61,7 @@ module NEMA(type, shaft_angle = 0) { //! Draw specified NEMA stepper motor
     shaft_rad = NEMA_shaft_dia(type) / 2;
     cap = 8;
     vitamin(str("NEMA(", type[0], "): Stepper motor NEMA", round(NEMA_width(type) / 2.54), " x ", length, "mm"));
+    thread_d = 3;                                                           // Is this always the case?
 
     union() {
         color(stepper_body_colour)                                          // black laminations
@@ -75,7 +77,7 @@ module NEMA(type, shaft_angle = 0) { //! Draw specified NEMA stepper motor
             tube(or = boss_rad, ir =  shaft_rad + 2, h = boss_height * 2); // raised boss
 
             for(end = [-1, 1])
-                translate_z(-length / 2 + end * (length - cap) / 2)
+                translate_z(-length / 2 + end * (length - cap) / 2) {
                     linear_extrude(height = cap, center = true)
                         difference() {
                             intersection() {
@@ -85,9 +87,14 @@ module NEMA(type, shaft_angle = 0) { //! Draw specified NEMA stepper motor
                             if(end > 0)
                                 for(x = NEMA_holes(type), y = NEMA_holes(type))
                                     translate([x, y])
-                                        circle(r = 3/2);
+                                        circle(d = thread_d);
                         }
+                }
         }
+        if(show_threads)
+            for(x = NEMA_holes(type), y = NEMA_holes(type))
+                translate([x, y, -cap / 2])
+                    female_metric_thread(thread_d, metric_coarse_pitch(thread_d), cap, colour = stepper_cap_colour);
 
         shaft =  NEMA_shaft_length(type);
         translate_z(-5)
@@ -112,7 +119,7 @@ module NEMA(type, shaft_angle = 0) { //! Draw specified NEMA stepper motor
 module NEMA_screw_positions(type, n = 4) { //! Positions children at the screw holes
     pitch = NEMA_hole_pitch(type);
 
-    for($i = [0 : n - 1])
+    for($i = [0 : 1 : min(n - 1, 4)])
         rotate($i * 90)
             translate([pitch / 2, pitch / 2])
                 rotate($i * -90)