Fixed short thread bug although threads should not be that short.

Fix handling of (Windows) paths with spaces

docs/usage.md

@@ -233,3 +233,33 @@ Vitamins are only ever previewed, so they are optimised to draw quickly in F5 an
 In OpenCSG 3D difference and intersection are relatively slow and the negative volumes interfere with nearby objects when they are composed into assemblies. For this reason as much
 as possible is done by unioning primitives and extruded 2D shapes. Any 3D differences or intersections are wrapped in ```render()``` so that CGAL will compute a polyhedron
 that is cached and reused. This will be very slow the first time it renders but very fast afterwards.
+
+### Panels and Platters
+
+The ```stls``` and ```dxfs``` scripts produce a file for each part but often it is desirable to print or route collections of parts laid out together.
+This can be done by adding scad files to folders called ```platters``` for STL files and ```panels``` for DXF files.
+These can aggregate and lay out parts by including ```NopSCADlib/core.scad``` and using modules ```use_stl(name)``` and ```use_dxf(name)```.
+These modules import the already generated singular STL and DXF files, so they are relatively fast. The name does not include the suffix.
+The scad files typically also need to include other files from the project to get the dimensions of the parts to calculate their positions.
+
+The composite part files have the same name as the scad file that generates them, with the suffix changed to ```.stl``` or ```.dxf```.
+
+The generated files are placed in ```stls/printed``` and ```dxfs/routed```.
+Any parts that are not covered by the platters / panels are copied into the ```printed``` / ```routed``` directories, so that they contain everything to be made.
+
+### Multiple configurations
+
+Some parametric designs might have several configurations, for example a 3D printer with different size options. If several configurations need to be supported at the
+ same time multiple sets of BOMS, STLS and DXFs need to be generated in separate diectories. NopSCADlib supports this by having multiple configuration files named
+```config_<target_name>.scad```. All the scripts take an optional first parameter that selects one of these config files by specifying ```target_name```.
+
+The target config file is selected by generating ```target.scad``` that includes ```config_<target_name>.scad```.
+The rest of the project includes ```target.scad``` to use the configuration.
+Additionally all the generated file directories (assemblies, bom, stls, dxfs, etc.) are placed in a sub-directory called ```<target_name>```.
+
+### Other libraries
+
+The build scripts need to be able to locate the source files where the modules to generate the STL files and assemblies reside. They will search all the scad files
+in the project plus any ```printed``` directories outside the project. This covers the printed parts in NopSCADlib but also allows other libraries of printed parts.
+
+Other libraries of vitamins and utilities can be used provided they follow the same convensions of NopSCADlib. The build scripts don't need to search those.

examples/MainsBreakOutBox/scad/bob_main.scad

@@ -35,7 +35,14 @@ $extrusion_width = 0.5;
 $pp1_colour = "dimgrey";
 $pp2_colour = [0.9, 0.9, 0.9];
 
-include <NopSCADlib/lib.scad>
+include <NopSCADlib/core.scad>
+include <NopSCADlib/vitamins/iecs.scad>
+include <NopSCADlib/vitamins/mains_sockets.scad>
+include <NopSCADlib/vitamins/tubings.scad>
+
+use <NopSCADlib/vitamins/insert.scad>
+use <NopSCADlib/vitamins/wire.scad>
+use <NopSCADlib/vitamins/jack.scad>
 use <NopSCADlib/printed/foot.scad>
 
 echo(extrusion_width = extrusion_width, layer_height = layer_height);

gallery/readme.md

@@ -6,6 +6,13 @@ Arduino thermostat to control a beer fridge to use it as an environmental chambe
 ![](ArduinoThermostat.png)
 
 
+<a name="TOP"></a>
+## EnviroPlus
+Environmental monitor using Enviro+ sensor board and a Raspberry Pi Zero.
+
+![](EnviroPlus.png)
+
+
 <a name="TOP"></a>
 ## FilamentDryBox
 A small fan oven with a spool holder to keep the filament warm and dry.

lib.scad

@@ -32,9 +32,12 @@ include <vitamins/buttons.scad>
 include <vitamins/components.scad>
 include <vitamins/displays.scad>
 include <vitamins/extrusions.scad>
+include <vitamins/extrusion_brackets.scad>
 include <vitamins/geared_steppers.scad>
+include <vitamins/green_terminals.scad>
 include <vitamins/hot_ends.scad>
 include <vitamins/inserts.scad>
+include <vitamins/kp_pillow_blocks.scad>
 include <vitamins/ldrs.scad>
 include <vitamins/leadnuts.scad>
 include <vitamins/leds.scad>
@@ -42,6 +45,7 @@ include <vitamins/light_strips.scad>
 include <vitamins/mains_sockets.scad>
 include <vitamins/modules.scad>
 include <vitamins/pillars.scad>
+include <vitamins/pin_headers.scad>
 include <vitamins/pulleys.scad>
 include <vitamins/ring_terminals.scad>
 include <vitamins/rails.scad>

libtest.scad

@@ -29,6 +29,7 @@ use <tests/blowers.scad>
 use <tests/bulldogs.scad>
 use <tests/buttons.scad>
 use <tests/cable_strips.scad>
+use <tests/circlips.scad>
 use <tests/components.scad>
 use <tests/d_connectors.scad>
 use <tests/displays.scad>
@@ -38,13 +39,13 @@ use <tests/fans.scad>
 use <tests/fuseholder.scad>
 use <tests/geared_steppers.scad>
 use <tests/hot_ends.scad>
-use <tests/iecs.scad>
+use <tests/IECs.scad>
 use <tests/inserts.scad>
 use <tests/jack.scad>
-use <tests/kp_pillow_blocks.scad>
+use <tests/KP_pillow_blocks.scad>
 use <tests/leadnuts.scad>
-use <tests/leds.scad>
-use <tests/ldrs.scad>
+use <tests/LDRs.scad>
+use <tests/LEDs.scad>
 use <tests/light_strips.scad>
 use <tests/linear_bearings.scad>
 use <tests/meter.scad>
@@ -53,22 +54,22 @@ use <tests/modules.scad>
 use <tests/nuts.scad>
 use <tests/o_ring.scad>
 use <tests/opengrab.scad>
-use <tests/pcbs.scad>
+use <tests/PCBs.scad>
 use <tests/pillars.scad>
-use <tests/psus.scad>
+use <tests/PSUs.scad>
 use <tests/pulleys.scad>
 use <tests/rails.scad>
 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/SCS_bearing_blocks.scad>
 use <tests/sealing_strip.scad>
 use <tests/sheets.scad>
-use <tests/sk_brackets.scad>
+use <tests/SK_brackets.scad>
 use <tests/spades.scad>
 use <tests/springs.scad>
-use <tests/ssrs.scad>
+use <tests/SSRs.scad>
 use <tests/stepper_motors.scad>
 use <tests/toggles.scad>
 use <tests/transformers.scad>
@@ -90,14 +91,14 @@ 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/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/SSR_shroud.scad>
+use <tests/PSU_shroud.scad>
 
 x0 = 0;
 x1 = x0 + 100;
@@ -147,20 +148,20 @@ translate([x5, cable_grommets_y + 250])
 translate([950, 600])
     box_test();
 
-translate([890, 730])
+translate([890, 750])
     printed_boxes();
 
-
-translate([850, 1260])
+translate([850, 1330])
     bbox_test();
 
 
 inserts_y = 0;
 nuts_y = inserts_y + 20;
-washers_y = nuts_y + 100;
+washers_y = nuts_y + 120;
 screws_y = washers_y + 120;
-o_rings_y = screws_y + 130;
-springs_y = o_rings_y + 20;
+circlips_y = screws_y + 160;
+springs_y = circlips_y + 20;
+o_rings_y = springs_y;
 sealing_strip_y = springs_y + 20;
 tubings_y = sealing_strip_y + 20;
 pillars_y = tubings_y + 20;
@@ -190,10 +191,13 @@ translate([x0, washers_y])
 translate([x0, screws_y])
     screws();
 
+translate([x0, circlips_y])
+    circlips();
+
 translate([x0, o_rings_y])
     o_rings();
 
-translate([x0, springs_y])
+translate([x0 + 20, springs_y])
     springs();
 
 translate([x0 + 50, sealing_strip_y])
@@ -208,7 +212,7 @@ translate([x0, pillars_y])
 translate([x0, leadnuts_y ])
     leadnuts();
 
-translate([x0 + 80, leadnuts_y])
+translate([x0 + 60, leadnuts_y])
     ball_bearings();
 
 translate([x0, pulleys_y])
@@ -366,7 +370,7 @@ 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 + 130, belts_y + 58]) {
+translate([x4 + 150, belts_y + 58]) {
     belt_test();
 
     translate([0, 60])
@@ -376,9 +380,8 @@ translate([x4 + 130, belts_y + 58]) {
 translate([x4, rails_y + 130])
     rails();
 
-translate([780, 0])
-    rotate(90)
-        cable_strips();
+translate([800, fans_y])
+    cable_strips();
 
 translate([x4, kp_pillow_blocks_y])
     kp_pillow_blocks();

printed/psu_shroud.scad

@@ -143,7 +143,7 @@ module psu_shroud(type, cable_d, name, cables = 1) { //! Generate the STL file f
  }
 
 module psu_shroud_assembly(type, cable_d, name, cables = 1) //! The printed parts with inserts fitted
-assembly(str("psu_shroud_", name)) {
+assembly(str("PSU_shroud_", name)) {
 
     translate_z(psu_shroud_height(type))
         vflip()

printed/ssr_shroud.scad

@@ -107,7 +107,7 @@ module ssr_shroud(type, cable_d, name) {    //! Generate the STL file for a spec
 }
 
 module ssr_shroud_assembly(type, cable_d, name) //! The printed parts with inserts fitted
-assembly(str("ssr_shroud_", name)) {
+assembly(str("SSR_shroud_", name)) {
 
     translate_z(ssr_shroud_height(type))
         vflip()

readme.md

@@ -17,39 +17,29 @@ See [usage](docs/usage.md) for requirements, installation instructions and a usa
 
 ## Table of Contents<a name="top"/>
 <table><tr>
-<th align="left"> Vitamins A-M </th><th align="left"> Vitamins N-Z </th><th align="left"> Printed </th><th align="left"> Utilities </th><th align="left"> Core Utilities </th></tr>
-<tr><td> <a href = "#Ball_bearings">Ball_bearings</a> </td><td> <a href = "#Nuts">Nuts</a> </td><td> <a href = "#Box">Box</a> </td><td> <a href = "#Annotation">Annotation</a> </td><td> <a href = "#Bom">Bom</a> </td></tr>
-<tr><td> <a href = "#Batteries">Batteries</a> </td><td> <a href = "#O_ring">O_ring</a> </td><td> <a href = "#Butt_box">Butt_box</a> </td><td> <a href = "#Bezier">Bezier</a> </td><td> <a href = "#Clip">Clip</a> </td></tr>
-<tr><td> <a href = "#Belts">Belts</a> </td><td> <a href = "#Opengrab">Opengrab</a> </td><td> <a href = "#Cable_grommets">Cable_grommets</a> </td><td> <a href = "#Dogbones">Dogbones</a> </td><td> <a href = "#Global">Global</a> </td></tr>
-<tr><td> <a href = "#Blowers">Blowers</a> </td><td> <a href = "#Pcb">Pcb</a> </td><td> <a href = "#Carriers">Carriers</a> </td><td> <a href = "#Fillet">Fillet</a> </td><td> <a href = "#Polyholes">Polyholes</a> </td></tr>
-<tr><td> <a href = "#Bulldogs">Bulldogs</a> </td><td> <a href = "#Pcbs">Pcbs</a> </td><td> <a href = "#Corner_block">Corner_block</a> </td><td> <a href = "#Hanging_hole">Hanging_hole</a> </td><td> <a href = "#Rounded_rectangle">Rounded_rectangle</a> </td></tr>
-<tr><td> <a href = "#Buttons">Buttons</a> </td><td> <a href = "#Pillars">Pillars</a> </td><td> <a href = "#Door_hinge">Door_hinge</a> </td><td> <a href = "#Layout">Layout</a> </td><td> <a href = "#Sphere">Sphere</a> </td></tr>
-<tr><td> <a href = "#Cable_strips">Cable_strips</a> </td><td> <a href = "#Pin_headers">Pin_headers</a> </td><td> <a href = "#Door_latch">Door_latch</a> </td><td> <a href = "#Maths">Maths</a> </td><td> <a href = "#Teardrops">Teardrops</a> </td></tr>
-<tr><td> <a href = "#Components">Components</a> </td><td> <a href = "#Psus">Psus</a> </td><td> <a href = "#Fan_guard">Fan_guard</a> </td><td> <a href = "#Offset">Offset</a> </td><td></td></tr>
-<tr><td> <a href = "#D_connectors">D_connectors</a> </td><td> <a href = "#Pulleys">Pulleys</a> </td><td> <a href = "#Fixing_block">Fixing_block</a> </td><td> <a href = "#Quadrant">Quadrant</a> </td><td></td></tr>
-<tr><td> <a href = "#Displays">Displays</a> </td><td> <a href = "#Rails">Rails</a> </td><td> <a href = "#Flat_hinge">Flat_hinge</a> </td><td> <a href = "#Round">Round</a> </td><td></td></tr>
-<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 = "#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>
-<tr><td> <a href = "#Leadnuts">Leadnuts</a> </td><td> <a href = "#Toggles">Toggles</a> </td><td></td><td></td><td></td></tr>
-<tr><td> <a href = "#Leds">Leds</a> </td><td> <a href = "#Transformers">Transformers</a> </td><td></td><td></td><td></td></tr>
-<tr><td> <a href = "#Light_strips">Light_strips</a> </td><td> <a href = "#Tubings">Tubings</a> </td><td></td><td></td><td></td></tr>
-<tr><td> <a href = "#Linear_bearings">Linear_bearings</a> </td><td> <a href = "#Variacs">Variacs</a> </td><td></td><td></td><td></td></tr>
-<tr><td> <a href = "#Mains_sockets">Mains_sockets</a> </td><td> <a href = "#Veroboard">Veroboard</a> </td><td></td><td></td><td></td></tr>
-<tr><td> <a href = "#Meter">Meter</a> </td><td> <a href = "#Washers">Washers</a> </td><td></td><td></td><td></td></tr>
-<tr><td> <a href = "#Microswitches">Microswitches</a> </td><td> <a href = "#Wire">Wire</a> </td><td></td><td></td><td></td></tr>
-<tr><td> <a href = "#Microview">Microview</a> </td><td> <a href = "#Zipties">Zipties</a> </td><td></td><td></td><td></td></tr>
-<tr><td> <a href = "#Modules">Modules</a> </td><td></td><td></td><td></td><td></td></tr>
+<th align="left"> Vitamins A-J </th><th align="left"> Vitamins K-Q </th><th align="left"> Vitamins R-Z </th><th align="left"> Printed </th><th align="left"> Utilities </th><th align="left"> Core Utilities </th></tr>
+<tr><td> <a href = "#Ball_bearings">Ball_bearings</a> </td><td> <a href = "#KP_pillow_blocks">KP_pillow_blocks</a> </td><td> <a href = "#Rails">Rails</a> </td><td> <a href = "#Box">Box</a> </td><td> <a href = "#Annotation">Annotation</a> </td><td> <a href = "#BOM">BOM</a> </td></tr>
+<tr><td> <a href = "#Batteries">Batteries</a> </td><td> <a href = "#LDRs">LDRs</a> </td><td> <a href = "#Ring_terminals">Ring_terminals</a> </td><td> <a href = "#Butt_box">Butt_box</a> </td><td> <a href = "#Bezier">Bezier</a> </td><td> <a href = "#Clip">Clip</a> </td></tr>
+<tr><td> <a href = "#Belts">Belts</a> </td><td> <a href = "#LEDs">LEDs</a> </td><td> <a href = "#Rockers">Rockers</a> </td><td> <a href = "#Cable_grommets">Cable_grommets</a> </td><td> <a href = "#Dogbones">Dogbones</a> </td><td> <a href = "#Global">Global</a> </td></tr>
+<tr><td> <a href = "#Blowers">Blowers</a> </td><td> <a href = "#Leadnuts">Leadnuts</a> </td><td> <a href = "#Rod">Rod</a> </td><td> <a href = "#Carriers">Carriers</a> </td><td> <a href = "#Fillet">Fillet</a> </td><td> <a href = "#Polyholes">Polyholes</a> </td></tr>
+<tr><td> <a href = "#Bulldogs">Bulldogs</a> </td><td> <a href = "#Light_strips">Light_strips</a> </td><td> <a href = "#SCS_bearing_blocks">SCS_bearing_blocks</a> </td><td> <a href = "#Corner_block">Corner_block</a> </td><td> <a href = "#Hanging_hole">Hanging_hole</a> </td><td> <a href = "#Rounded_rectangle">Rounded_rectangle</a> </td></tr>
+<tr><td> <a href = "#Buttons">Buttons</a> </td><td> <a href = "#Linear_bearings">Linear_bearings</a> </td><td> <a href = "#SK_brackets">SK_brackets</a> </td><td> <a href = "#Door_hinge">Door_hinge</a> </td><td> <a href = "#Layout">Layout</a> </td><td> <a href = "#Sphere">Sphere</a> </td></tr>
+<tr><td> <a href = "#Cable_strips">Cable_strips</a> </td><td> <a href = "#Mains_sockets">Mains_sockets</a> </td><td> <a href = "#SSRs">SSRs</a> </td><td> <a href = "#Door_latch">Door_latch</a> </td><td> <a href = "#Maths">Maths</a> </td><td> <a href = "#Teardrops">Teardrops</a> </td></tr>
+<tr><td> <a href = "#Circlips">Circlips</a> </td><td> <a href = "#Meter">Meter</a> </td><td> <a href = "#Screws">Screws</a> </td><td> <a href = "#Fan_guard">Fan_guard</a> </td><td> <a href = "#Offset">Offset</a> </td><td></td></tr>
+<tr><td> <a href = "#Components">Components</a> </td><td> <a href = "#Microswitches">Microswitches</a> </td><td> <a href = "#Sealing_strip">Sealing_strip</a> </td><td> <a href = "#Fixing_block">Fixing_block</a> </td><td> <a href = "#Quadrant">Quadrant</a> </td><td></td></tr>
+<tr><td> <a href = "#D_connectors">D_connectors</a> </td><td> <a href = "#Microview">Microview</a> </td><td> <a href = "#Sheets">Sheets</a> </td><td> <a href = "#Flat_hinge">Flat_hinge</a> </td><td> <a href = "#Round">Round</a> </td><td></td></tr>
+<tr><td> <a href = "#Displays">Displays</a> </td><td> <a href = "#Modules">Modules</a> </td><td> <a href = "#Spades">Spades</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 = "#Extrusion_brackets">Extrusion_brackets</a> </td><td> <a href = "#Nuts">Nuts</a> </td><td> <a href = "#Spools">Spools</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 = "#Extrusions">Extrusions</a> </td><td> <a href = "#O_ring">O_ring</a> </td><td> <a href = "#Springs">Springs</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 = "#Fans">Fans</a> </td><td> <a href = "#Opengrab">Opengrab</a> </td><td> <a href = "#Stepper_motors">Stepper_motors</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 = "#Fuseholder">Fuseholder</a> </td><td> <a href = "#PCB">PCB</a> </td><td> <a href = "#Toggles">Toggles</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 = "#Geared_steppers">Geared_steppers</a> </td><td> <a href = "#PCBs">PCBs</a> </td><td> <a href = "#Transformers">Transformers</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 = "#Green_terminals">Green_terminals</a> </td><td> <a href = "#PSUs">PSUs</a> </td><td> <a href = "#Tubings">Tubings</a> </td><td> <a href = "#SSR_shroud">SSR_shroud</a> </td><td></td><td></td></tr>
+<tr><td> <a href = "#Hot_ends">Hot_ends</a> </td><td> <a href = "#Pillars">Pillars</a> </td><td> <a href = "#Variacs">Variacs</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 = "#Pin_headers">Pin_headers</a> </td><td> <a href = "#Veroboard">Veroboard</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 = "#Pulleys">Pulleys</a> </td><td> <a href = "#Washers">Washers</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></td><td> <a href = "#Wire">Wire</a> </td><td></td><td></td><td></td></tr>
+<tr><td> <a href = "#Jack">Jack</a> </td><td></td><td> <a href = "#Zipties">Zipties</a> </td><td></td><td></td><td></td></tr>
 </table>
 
 ---
@@ -395,6 +385,48 @@ When the sides are constrained then a circular model is more accurate.
 |   3 | ```cable_strip(20, 25, 100, 30)``` |  Polypropylene strip 189mm x 24mm x 0.8mm |
 
 
+<a href="#top">Top</a>
+
+---
+<a name="Circlips"></a>
+## Circlips
+Circlips aka tapered retaining rings.
+
+
+[vitamins/circlips.scad](vitamins/circlips.scad) Object definitions.
+
+[vitamins/circlip.scad](vitamins/circlip.scad) Implementation.
+
+[tests/circlips.scad](tests/circlips.scad) Code for this example.
+
+### Properties
+| Function | Description |
+|:--- |:--- |
+| ```circlip_a(type)``` | Size of the lugs |
+| ```circlip_b(type)``` | Widest part of the taper |
+| ```circlip_d1(type)``` | Nominal OD, i.e. diameter of tube |
+| ```circlip_d2(type)``` | Groove diameter, i.e. OD when installed |
+| ```circlip_d3(type)``` | Relaxed OD when not installed |
+| ```circlip_d5(type)``` | Plier hole diameter |
+| ```circlip_thickness(type)``` | Thickness |
+
+### Modules
+| Module | Description |
+|:--- |:--- |
+| ```internal_circlip(type, open = 0)``` | Draw specified internal circlip, open = 0, for nominal size installed, 1 for relaxed uninstalled, -1 for squeezed to install |
+
+![circlips](tests/png/circlips.png)
+
+### Vitamins
+| Qty | Module call | BOM entry |
+| ---:|:--- |:---|
+|   3 | ```circlip(circlip_12i)``` |  Circlip internal 12mm |
+|   3 | ```circlip(circlip_15i)``` |  Circlip internal 15mm |
+|   3 | ```circlip(circlip_19i)``` |  Circlip internal 19mm |
+|   3 | ```circlip(circlip_21i)``` |  Circlip internal 21mm |
+|   3 | ```circlip(circlip_28i)``` |  Circlip internal 28mm |
+
+
 <a href="#top">Top</a>
 
 ---
@@ -676,14 +708,15 @@ Aluminium  extrusion.
 ### Vitamins
 | Qty | Module call | BOM entry |
 | ---:|:--- |:---|
+|   1 | ```extrusion(E1515, 80)``` |  Extrusion E1515 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 |
+|   1 | ```extrusion(E3030, 80, cornerHole = true)``` |  Extrusion E3030 x 80mm |
+|   1 | ```extrusion(E3060, 80, cornerHole = true)``` |  Extrusion E3060 x 80mm |
+|   1 | ```extrusion(E4040, 80, cornerHole = true)``` |  Extrusion E4040 x 80mm |
+|   1 | ```extrusion(E4080, 80, cornerHole = true)``` |  Extrusion E4080 x 80mm |
 
 
 <a href="#top">Top</a>
@@ -876,7 +909,6 @@ Parametric green terminal blocks
 | Module | Description |
 |:--- |:--- |
 | ```green_terminal(type, ways, skip = [], colour = "lime")``` | Draw green terminal blocks, skip can be used to remove pins. |
-| ```terminal_254(ways, skip = [])``` | Draw 0.1" terminal block |
 
 ![green_terminals](tests/png/green_terminals.png)
 
@@ -986,8 +1018,8 @@ Mini LCD Celsius Digital Thermometer Hygrometer Temperature Humidity Meter Gauge
 <a href="#top">Top</a>
 
 ---
-<a name="Iecs"></a>
-## Iecs
+<a name="IECs"></a>
+## IECs
 IEC mains inlets and outlet.
 
 
@@ -995,7 +1027,7 @@ IEC mains inlets and outlet.
 
 [vitamins/iec.scad](vitamins/iec.scad) Implementation.
 
-[tests/iecs.scad](tests/iecs.scad) Code for this example.
+[tests/IECs.scad](tests/IECs.scad) Code for this example.
 
 ### Properties
 | Function | Description |
@@ -1142,8 +1174,8 @@ E.g. a "brown" socket for mains live needs to be displayed as "sienna" to look r
 <a href="#top">Top</a>
 
 ---
-<a name="Kp_pillow_blocks"></a>
-## Kp_pillow_blocks
+<a name="KP_pillow_blocks"></a>
+## KP_pillow_blocks
 KP pillow block bearings
 
 
@@ -1151,7 +1183,7 @@ KP pillow block bearings
 
 [vitamins/kp_pillow_block.scad](vitamins/kp_pillow_block.scad) Implementation.
 
-[tests/kp_pillow_blocks.scad](tests/kp_pillow_blocks.scad) Code for this example.
+[tests/KP_pillow_blocks.scad](tests/KP_pillow_blocks.scad) Code for this example.
 
 ### Properties
 | Function | Description |
@@ -1195,8 +1227,8 @@ KP pillow block bearings
 <a href="#top">Top</a>
 
 ---
-<a name="Ldrs"></a>
-## Ldrs
+<a name="LDRs"></a>
+## LDRs
 Light dependent resistors.
 
 Larger ones seem to have both a higher dark resistance and a lower bright light resistance.
@@ -1206,7 +1238,7 @@ Larger ones seem to have both a higher dark resistance and a lower bright light
 
 [vitamins/ldr.scad](vitamins/ldr.scad) Implementation.
 
-[tests/ldrs.scad](tests/ldrs.scad) Code for this example.
+[tests/LDRs.scad](tests/LDRs.scad) Code for this example.
 
 ### Properties
 | Function | Description |
@@ -1286,8 +1318,8 @@ Nuts for leadscrews.
 <a href="#top">Top</a>
 
 ---
-<a name="Leds"></a>
-## Leds
+<a name="LEDs"></a>
+## LEDs
 Standard domed through hole LEDs. Can specify colour and lead length.
 
 
@@ -1295,7 +1327,7 @@ Standard domed through hole LEDs. Can specify colour and lead length.
 
 [vitamins/led.scad](vitamins/led.scad) Implementation.
 
-[tests/leds.scad](tests/leds.scad) Code for this example.
+[tests/LEDs.scad](tests/LEDs.scad) Code for this example.
 
 ### Properties
 | Function | Description |
@@ -1697,8 +1729,12 @@ If a nut is given a child then it gets placed on its top surface.
 ### Properties
 | Function | Description |
 |:--- |:--- |
+| ```nut_pitch(type)``` | Pitch if not standard metric course thread |
 | ```nut_radius(type)``` | Radius across the corners |
 | ```nut_size(type)``` | Diameter of the corresponding screw |
+| ```nut_square_size(type)``` | Diameter of the corresponding screw |
+| ```nut_square_thickness(type)``` | Thickness of the square nut |
+| ```nut_square_width(type)``` | Width of the square nut |
 | ```nut_trap_depth(type)``` | Depth of nut trap |
 | ```nut_washer(type)``` | Corresponding washer |
 
@@ -1715,6 +1751,7 @@ If a nut is given a child then it gets placed on its top surface.
 |:--- |:--- |
 | ```nut(type, nyloc = false, brass = false, nylon = false)``` | Draw specified nut |
 | ```nut_and_washer(type, nyloc)``` | Draw nut with corresponding washer |
+| ```nut_square(type, brass = false, nylon = false)``` | Draw specified square nut |
 | ```nut_trap(screw, nut, depth = 0, horizontal = false, supported = false, h = 200)``` | Make a nut trap |
 | ```wingnut(type)``` | Draw a wingnut |
 
@@ -1733,18 +1770,23 @@ If a nut is given a child then it gets placed on its top surface.
 |   1 | ```nut(M3_nut)``` |  Nut M3 x 2.4mm  |
 |   1 | ```nut(M3_nut, brass = true)``` |  Nut M3 x 2.4mm brass |
 |   1 | ```nut(M3_nut, nyloc = true)``` |  Nut M3 x 2.4mm nyloc |
+|   1 | ```nut(M3nS_thin_nut)``` |  Nut M3nS 5.5 x 1.8mm  |
 |   1 | ```sliding_t_nut(M4_hammer_nut)``` |  Nut M4 hammer |
 |   1 | ```sliding_t_nut(M4_sliding_t_nut)``` |  Nut M4 sliding T |
 |   1 | ```nut(M4_nut)``` |  Nut M4 x 3.2mm  |
 |   1 | ```nut(M4_nut, nyloc = true)``` |  Nut M4 x 3.2mm nyloc |
+|   1 | ```nut(M4nS_thin_nut)``` |  Nut M4nS 7 x 2.2mm  |
 |   1 | ```sliding_t_nut(M5_sliding_t_nut)``` |  Nut M5 sliding T |
 |   1 | ```nut(M5_nut)``` |  Nut M5 x 4mm  |
 |   1 | ```nut(M5_nut, nyloc = true)``` |  Nut M5 x 4mm nyloc |
+|   1 | ```nut(M5nS_thin_nut)``` |  Nut M5nS 8 x 2.7mm  |
 |   1 | ```nut(M6_half_nut)``` |  Nut M6 x 3mm  |
 |   1 | ```nut(M6_nut)``` |  Nut M6 x 5mm  |
 |   1 | ```nut(M6_nut, nyloc = true)``` |  Nut M6 x 5mm nyloc |
+|   1 | ```nut(M6nS_thin_nut)``` |  Nut M6nS 10 x 3.2mm  |
 |   1 | ```nut(M8_nut)``` |  Nut M8 x 6.5mm  |
 |   1 | ```nut(M8_nut, nyloc = true)``` |  Nut M8 x 6.5mm nyloc |
+|   1 | ```nut(M8nS_thin_nut)``` |  Nut M8nS 13 x 4mm  |
 |   1 | ```washer(M6_washer)``` |  Washer  M6 x 12.5mm x 1.5mm |
 |   1 | ```wingnut(M4_wingnut)``` |  Wingnut M4 |
 
@@ -1817,14 +1859,14 @@ A permanent magnet that can be magnatized and de-magnatized electronically.
 <a href="#top">Top</a>
 
 ---
-<a name="Pcb"></a>
-## Pcb
+<a name="PCB"></a>
+## PCB
 PCBs and perfboard with optional components. The shape can be a rectangle with optionally rounded corners or a polygon for odd shapes like Arduino.
 
 
 [vitamins/pcb.scad](vitamins/pcb.scad) Implementation.
 
-[tests/pcb.scad](tests/pcb.scad) Code for this example.
+[tests/PCB.scad](tests/PCB.scad) Code for this example.
 
 ### Properties
 | Function | Description |
@@ -1899,8 +1941,8 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 <a href="#top">Top</a>
 
 ---
-<a name="Pcbs"></a>
-## Pcbs
+<a name="PCBs"></a>
+## PCBs
 PCBs and perfboard with optional components. The shape can be a rectangle with optionally rounded corners or a polygon for odd shapes like Arduino.
 
 
@@ -1908,7 +1950,7 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 
 [vitamins/pcb.scad](vitamins/pcb.scad) Implementation.
 
-[tests/pcbs.scad](tests/pcbs.scad) Code for this example.
+[tests/PCBs.scad](tests/PCBs.scad) Code for this example.
 
 ### Properties
 | Function | Description |
@@ -1992,7 +2034,7 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |   1 | ```molex_254(2)``` |  Molex KK header 2 way |
 |   1 | ```molex_254(3)``` |  Molex KK header 3 way |
 |  16 | ```nut(M2_nut, nyloc = true)``` |  Nut M2 x 1.6mm nyloc |
-|  32 | ```nut(M2p5_nut, nyloc = true)``` |  Nut M2.5 x 2.2mm nyloc |
+|  30 | ```nut(M2p5_nut, nyloc = true)``` |  Nut M2.5 x 2.2mm nyloc |
 |  12 | ```nut(M3_nut, nyloc = true)``` |  Nut M3 x 2.4mm nyloc |
 |  12 | ```nut(M4_nut, nyloc = true)``` |  Nut M4 x 3.2mm nyloc |
 |   1 | ```pcb(PI_IO)``` |  PI_IO V2 |
@@ -2007,7 +2049,7 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |   1 | ```pcb(RPI3)``` |  Raspberry Pi 3 |
 |   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 |
+|   2 | ```screw(M2p5_cap_screw, 16)``` |  Screw M2.5 cap x 16mm |
 |  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 |
@@ -2019,7 +2061,7 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |   2 | ```green_terminal(gt_2p54, 4)``` |  Terminal block 4 way 0.1" |
 |   1 |  |  USB A to Mini B lead |
 |  16 | ```washer(M2_washer)``` |  Washer  M2 x 5mm x 0.3mm |
-|  32 | ```washer(M2p5_washer)``` |  Washer  M2.5 x 5.9mm x 0.5mm |
+|  30 | ```washer(M2p5_washer)``` |  Washer  M2.5 x 5.9mm x 0.5mm |
 |  12 | ```washer(M3_washer)``` |  Washer  M3 x 7mm x 0.5mm |
 |  12 | ```washer(M4_washer)``` |  Washer  M4 x 9mm x 0.8mm |
 |   1 | ```pcb(ZC_A0591)``` |  ZC-A0591 ULN2003 driver PCB |
@@ -2036,7 +2078,7 @@ PCBs and perfboard with optional components. The shape can be a rectangle with o
 |   4 | pcb_spacer25120_2.stl |
 |   4 | pcb_spacer25130_2.stl |
 |   4 | pcb_spacer25240.stl |
-|   4 | pcb_spacer2550.stl |
+|   2 | pcb_spacer2550.stl |
 |   4 | pcb_spacer2580.stl |
 |   4 | pcb_spacer2590.stl |
 |   4 | pcb_spacer30180.stl |
@@ -2146,8 +2188,8 @@ Pin headers and sockets, etc.
 <a href="#top">Top</a>
 
 ---
-<a name="Psus"></a>
-## Psus
+<a name="PSUs"></a>
+## PSUs
 Powersupplies. Can be a simple cube or can be defined by a list of six faces, each with thickness, holes, cutouts, etc.
 
 Face order is bottom, top, left, right, front, back.
@@ -2157,7 +2199,7 @@ Face order is bottom, top, left, right, front, back.
 
 [vitamins/psu.scad](vitamins/psu.scad) Implementation.
 
-[tests/psus.scad](tests/psus.scad) Code for this example.
+[tests/PSUs.scad](tests/PSUs.scad) Code for this example.
 
 ### Properties
 | Function | Description |
@@ -2600,8 +2642,8 @@ Machine screws and wood screws with various head styles.
 <a href="#top">Top</a>
 
 ---
-<a name="Scs_bearing_blocks"></a>
-## Scs_bearing_blocks
+<a name="SCS_bearing_blocks"></a>
+## SCS_bearing_blocks
 SCSnUU and SCSnLUU bearing blocks
 
 
@@ -2609,7 +2651,7 @@ SCSnUU and SCSnLUU bearing blocks
 
 [vitamins/scs_bearing_block.scad](vitamins/scs_bearing_block.scad) Implementation.
 
-[tests/scs_bearing_blocks.scad](tests/scs_bearing_blocks.scad) Code for this example.
+[tests/SCS_bearing_blocks.scad](tests/SCS_bearing_blocks.scad) Code for this example.
 
 ### Properties
 | Function | Description |
@@ -2617,10 +2659,12 @@ SCSnUU and SCSnLUU bearing blocks
 | ```scs_bearing(type)``` | Linear bearing used |
 | ```scs_block_center_height(type)``` | Height of the center of the block |
 | ```scs_block_side_height(type)``` | Height of the side of the block, this determines the minimum screw length |
+| ```scs_circlip(type)``` | Circlip used |
 | ```scs_hole_offset(type)``` | Offset of bearing hole from base of block |
 | ```scs_screw(type)``` | Screw type |
 | ```scs_screw_separation_x(type)``` | Screw separation in X direction |
 | ```scs_screw_separation_z(type)``` | Screw separation in Z direction |
+| ```scs_spacer(type)``` | Spacer used in long bearings |
 
 ### Functions
 | Function | Description |
@@ -2750,8 +2794,8 @@ Note that modules that drill holes will return a 2D object if ```h``` is set to
 <a href="#top">Top</a>
 
 ---
-<a name="Sk_brackets"></a>
-## Sk_brackets
+<a name="SK_brackets"></a>
+## SK_brackets
 SK shaft support brackets
 
 
@@ -2759,7 +2803,7 @@ SK shaft support brackets
 
 [vitamins/sk_bracket.scad](vitamins/sk_bracket.scad) Implementation.
 
-[tests/sk_brackets.scad](tests/sk_brackets.scad) Code for this example.
+[tests/SK_brackets.scad](tests/SK_brackets.scad) Code for this example.
 
 ### Properties
 | Function | Description |
@@ -2933,8 +2977,8 @@ By default springs have their origin at the bottom but can be centered.
 <a href="#top">Top</a>
 
 ---
-<a name="Ssrs"></a>
-## Ssrs
+<a name="SSRs"></a>
+## SSRs
 Solid state relays.
 
 
@@ -2942,7 +2986,7 @@ Solid state relays.
 
 [vitamins/ssr.scad](vitamins/ssr.scad) Implementation.
 
-[tests/ssrs.scad](tests/ssrs.scad) Code for this example.
+[tests/SSRs.scad](tests/SSRs.scad) Code for this example.
 
 ### Properties
 | Function | Description |
@@ -4251,15 +4295,15 @@ Printed handle that can be printed without needing support material due to its t
 <a href="#top">Top</a>
 
 ---
-<a name="Pcb_mount"></a>
-## Pcb_mount
+<a name="PCB_mount"></a>
+## PCB_mount
 A frame to mount a PCB by its corners when it has no mounting holes.
 The stl must be given a parameterless wrapper in the project that uses it.
 
 
 [printed/pcb_mount.scad](printed/pcb_mount.scad) Implementation.
 
-[tests/pcb_mount.scad](tests/pcb_mount.scad) Code for this example.
+[tests/PCB_mount.scad](tests/PCB_mount.scad) Code for this example.
 
 ### Functions
 | Function | Description |
@@ -4380,15 +4424,15 @@ It can also have printed feet on the base with the screws doubling up to hold th
 <a href="#top">Top</a>
 
 ---
-<a name="Psu_shroud"></a>
-## Psu_shroud
+<a name="PSU_shroud"></a>
+## PSU_shroud
 A cover to go over the mains end of a PSU terminal strip to make it safe.
 The stl and assembly must be given a name and parameterless wrappers for the stl and assembly added to the project.
 
 
 [printed/psu_shroud.scad](printed/psu_shroud.scad) Implementation.
 
-[tests/psu_shroud.scad](tests/psu_shroud.scad) Code for this example.
+[tests/PSU_shroud.scad](tests/PSU_shroud.scad) Code for this example.
 
 ### Functions
 | Function | Description |
@@ -4432,9 +4476,9 @@ The stl and assembly must be given a name and parameterless wrappers for the 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 |
+|   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>
@@ -4582,15 +4626,15 @@ UK 13A socket and printed backbox with earth terminal for the panel it is mounte
 <a href="#top">Top</a>
 
 ---
-<a name="Ssr_shroud"></a>
-## Ssr_shroud
+<a name="SSR_shroud"></a>
+## SSR_shroud
 A cover to go over the mains end of an SSR to make it safe to be touched.
 The STL and assembly must be given a name and parameterless wrappers for the stl and assembly added to the project.
 
 
 [printed/ssr_shroud.scad](printed/ssr_shroud.scad) Implementation.
 
-[tests/ssr_shroud.scad](tests/ssr_shroud.scad) Code for this example.
+[tests/SSR_shroud.scad](tests/SSR_shroud.scad) Code for this example.
 
 ### Functions
 | Function | Description |
@@ -4630,8 +4674,8 @@ The STL and assembly must be given a name and parameterless wrappers for the stl
 ### Assemblies
 | Qty | Name |
 | ---:|:--- |
-|   1 | ssr_shroud_SSR10DA_assembly |
-|   1 | ssr_shroud_SSR25DA_assembly |
+|   1 | SSR_shroud_SSR10DA_assembly |
+|   1 | SSR_shroud_SSR25DA_assembly |
 
 
 <a href="#top">Top</a>
@@ -4846,6 +4890,7 @@ Maths utilities for manipulating vectors and matrices.
 | ```euler(R)``` | Convert a rotation matrix to a Euler rotation vector. |
 | ```identity(n, x = 1)``` | Construct an arbitrary size identity matrix |
 | ```reverse(v)``` | Reverse a vector |
+| ```rot3_z(a)``` | Generate a 3x3 matrix to rotate around z |
 | ```rotate(a, v)``` | Generate a 4x4 rotation matrix, ```a``` can be a vector of three angles or a single angle around ```z```, or around axis ```v``` |
 | ```scale(v)``` |  Generate a 4x4 matrix that scales by ```v```, which can be a vector of xyz factors or a scalar to scale all axes equally |
 | ```transform(v, m)``` | Apply 4x4 transform to a 3 vector by extending it and cropping it again |
@@ -5055,7 +5100,7 @@ a cylinder. To get around this a colour can be passed to thread that is used to
 
 Making the ends requires a CGAL intersection, which make threads relatively slow. For this reason they are generally disabled when using the GUI but can
 be enabled by setting ```$show_threads``` to ```true```. When the tests are run, by default, threads are enabled only for things that feature them like screws.
-This behaviour can be changed by setting a ```SHOW_THREADS``` environment variable to ```false``` to disable all threads and ```true``` to enable all threads.
+This behaviour can be changed by setting a ```NOPSCADLIB_SHOW_THREADS``` environment variable to ```false``` to disable all threads and ```true``` to enable all threads.
 The same variable also affects the generation of assembly diagrams.
 
 Threads obey the $fn, $fa, $fs variables.
@@ -5105,8 +5150,8 @@ Simple tube or ring
 <a href="#top">Top</a>
 
 ---
-<a name="Bom"></a>
-## Bom
+<a name="BOM"></a>
+## BOM
 Bill Of Materials generation via echo and the ```bom.py``` script. Also handles exploded assembly views and posing. Assembly instructions can precede the module
 definition that makes the assembly.
 
@@ -5116,7 +5161,7 @@ heirachical BOMs are also generated for real projects.
 
 [utils/core/bom.scad](utils/core/bom.scad) Implementation.
 
-[tests/bom.scad](tests/bom.scad) Code for this example.
+[tests/BOM.scad](tests/BOM.scad) Code for this example.
 
 ### Functions
 | Function | Description |

scripts/bom.py

@@ -184,10 +184,17 @@ def parse_bom(file = "openscad.log", name = None):
                     main.add_part(s)
                     if stack:
                         main.assemblies[stack[-1]].add_part(s)
+        else:
+            if 'ERROR:' in line or 'WARNING:' in line:
+                print(line[:-1])
     return main
 
+def usage():
+    print("\nusage:\n\tbom [target_config] [<accessory_name>_assembly] - Generate BOMs for a project or an accessory to a project.")
+    sys.exit(1)
+
 def boms(target = None, assembly = None):
-    bom_dir = set_config(target) + "bom"
+    bom_dir = set_config(target, usage) + "bom"
     if assembly:
         bom_dir += "/accessories"
         if not os.path.isdir(bom_dir):
@@ -214,7 +221,7 @@ def boms(target = None, assembly = None):
     #
     # Run openscad
     #
-    openscad.run("-D","$bom=2","-D","$preview=true","-o", "openscad.echo", bom_maker_name)
+    openscad.run("-D","$bom=2","-D","$preview=true","-o", "openscad.echo", "-d", bom_dir + "/bom.deps", bom_maker_name)
     os.remove(bom_maker_name)
     print("Generating bom ...", end=" ")
 
@@ -236,11 +243,24 @@ def boms(target = None, assembly = None):
     print("done")
 
 if __name__ == '__main__':
-    args = len(sys.argv)
-    if args > 1:
-        if args > 2:
-            boms(sys.argv[1], sys.argv[2])
-        else:
-            boms(sys.argv[1])
+    if len(sys.argv) > 3: usage()
+
+    if len(sys.argv) == 3:
+        target, assembly = sys.argv[1], sys.argv[2]
     else:
-        boms();
+        if len(sys.argv) == 2:
+            if sys.argv[1][-9:] == "_assembly":
+                target, assembly = None, sys.argv[1]
+            else:
+                target, assembly = sys.argv[1], None
+        else:
+            target, assembly = None, None
+
+    if assembly:
+        if assembly[-9:] != "_assembly": usage()
+
+    try:
+        boms(target, assembly)
+    except Exception as e:
+        print(str(e))
+        sys.exit(1)

scripts/c14n_stl.py

@@ -113,5 +113,5 @@ if __name__ == '__main__':
     if len(sys.argv) == 2:
         canonicalise(sys.argv[1])
     else:
-        print("usage: c14n_stl file")
+        print("\nusage:\n\t c14n_stl file - Canonicalise an STL file created by OpenSCAD.")
         sys.exit(1)

scripts/deps.py

@@ -17,6 +17,7 @@
 # If not, see <https://www.gnu.org/licenses/>.
 #
 import os
+from set_config import source_dir
 
 def mtime(file):
     if os.path.isfile(file):
@@ -32,7 +33,7 @@ def read_deps(dname):
     deps = []
     for line in lines:
         if line.startswith('\t'):
-            dep = line[1 : -1].rstrip(' \\')
+            dep = line[1 : -1].rstrip(' \\').replace('\\ ', ' ')
             if not os.path.basename(dep) in ['stl.scad', 'dxf.scad', 'svf.scad', 'png.scad', 'target.scad']:
                 deps.append(dep)
     return deps
@@ -48,3 +49,18 @@ def check_deps(target, dname):
         if mtime(dep) > target_mtime:
             return dep + ' changed'
     return None
+
+def source_dirs(bom_dir):
+    dirs = set()
+    lib_dirs = set()
+    deps = read_deps(bom_dir + '/bom.deps')
+    cwd = os.getcwd().replace('\\', '/')
+    for dep in deps:
+        dir = os.path.dirname(dep)
+        if dir.startswith(cwd):
+            dirs.add(dir[len(cwd) + 1:])
+        else:
+            if dir.endswith('/printed'):
+                lib_dirs.add(dir)
+    dirs.remove(source_dir)
+    return [source_dir] + sorted(dirs) + sorted(lib_dirs)

scripts/doc_scripts.py

@@ -26,6 +26,7 @@ from __future__ import print_function
 
 import os
 from tests import do_cmd
+import argparse
 
 dir = 'scripts'
 
@@ -74,4 +75,5 @@ They should work with both Python 2 and Python 3.
 
 
 if __name__ == '__main__':
+    argparse.ArgumentParser(description='Generate scripts/readme.md and make html versions of that and doc/usage.md').parse_args()
     doc_scripts()

scripts/exports.py

@@ -30,14 +30,14 @@ import times
 from deps import *
 import json
 
-def bom_to_parts(target_dir, part_type, assembly = None):
+def bom_to_parts(bom_dir, part_type, assembly = None):
     #
     # Make a list of all the parts in the BOM
     #
     part_files = []
     bom = assembly + '.txt' if assembly else "bom.txt"
     suffix = ".dxf" if part_type == 'svg' else '.' + part_type
-    with open(target_dir + "/../bom/" + bom, "rt") as f:
+    with open(bom_dir + '/' + bom, "rt") as f:
         for line in f.readlines():
             words = line.split()
             if words:
@@ -46,13 +46,24 @@ def bom_to_parts(target_dir, part_type, assembly = None):
                    part_files.append(last_word[:-4] + '.' + part_type)
     return part_files
 
+def usage(t):
+    print("\nusage:\n\t%ss [target_config] [<name1>.%s] ... [<nameN>.%s] - Generate specified %s files or all if none specified." % ( t, t, t, t.upper()))
+    sys.exit(1)
+
 def make_parts(target, part_type, parts = None):
     #
+    # Check list of parts is the correct type
+    #
+    if parts:
+        for p in parts:
+            if not p.endswith('.' + part_type): usage(part_type)
+    #
     # Make the target directory
     #
-    top_dir = set_config(target)
+    top_dir = set_config(target, lambda: usage(part_type))
     target_dir = top_dir + part_type + 's'
     deps_dir = top_dir + "deps"
+    bom_dir = top_dir + "bom"
     if not os.path.isdir(target_dir):
         os.makedirs(target_dir)
     if not os.path.isdir(deps_dir):
@@ -64,7 +75,7 @@ def make_parts(target, part_type, parts = None):
     if parts:
         targets = list(parts)           #copy the list so we dont modify the list passed in
     else:
-        targets = bom_to_parts(target_dir, part_type)
+        targets = bom_to_parts(bom_dir, part_type)
         for file in os.listdir(target_dir):
             if file.endswith('.' + part_type):
                 if not file in targets:
@@ -83,12 +94,11 @@ def make_parts(target, part_type, parts = None):
     #
     # Find all the scad files
     #
-    lib_dir = os.environ['OPENSCADPATH'] + '/NopSCADlib/printed'
     module_suffix = '_dxf' if part_type == 'svg' else '_' + part_type
-    for dir in [source_dir, source_dir + '/printed', lib_dir]:
-        if os.path.isdir(dir):
+    for dir in source_dirs(bom_dir):
+        if targets and os.path.isdir(dir):
             for filename in os.listdir(dir):
-                if filename[-5:] == ".scad":
+                if targets and filename[-5:] == ".scad":
                     #
                     # find any modules ending in _<part_type>
                     #
@@ -138,9 +148,6 @@ def make_parts(target, part_type, parts = None):
     #
     if targets:
         for part in targets:
-            if part[-4:] != '.' + part_type:
-                print(part, "is not a", part_type, "file")
-            else:
-                print("Could not find a module called", part[:-4] + module_suffix, "to make", part)
-        sys.exit(1)
+            print("Could not find a module called", part[:-4] + module_suffix, "to make", part)
+        usage(part_type)
     times.print_times()

scripts/gallery.py

@@ -30,6 +30,7 @@ import re
 from shutil import copyfile
 from tests import update_image
 import sys
+import argparse
 
 project_dirs = ['../..', 'examples']
 target_dir = 'gallery'
@@ -39,7 +40,6 @@ def gallery(force):
     if not os.path.isdir(target_dir):
         os.makedirs(target_dir)
 
-
     paths = sorted([pdir + '/' + i for pdir in project_dirs for i in os.listdir(pdir) if os.path.isdir(pdir + '/' + i + '/assemblies')], key = lambda s: os.path.basename(s))
     with open(output_name, 'wt') as output_file:
         print("# A gallery of projects made with NopSCADlib", file = output_file)
@@ -78,4 +78,8 @@ def gallery(force):
 
 if __name__ == '__main__':
     init()
-    gallery(force = len(sys.argv) > 1 and sys.argv[1] == '-f')
+    parser = argparse.ArgumentParser(description='Creates a galley of projects by copying the top level image and description to gallery/readme.md.')
+    parser.add_argument("-f", help = "run make_all in each project to force update", action="store_true")
+    args = parser.parse_args()
+
+    gallery(force = args.f)

scripts/make_all.py

@@ -27,9 +27,17 @@ from bom import boms
 from render import render
 from views import views
 from plateup import plateup
+from set_config import set_config
+
+
+def usage():
+    print("\nusage:\n\tmake_all [target_config] - Make all the manufacturing files and readme for a project.")
+    sys.exit(1)
 
 if __name__ == '__main__':
+    if len(sys.argv) > 2: usage()
     target = None if len(sys.argv) == 1 else sys.argv[1]
+    set_config(target, usage)
     boms(target)
     for part in ['stl', 'dxf']:
         make_parts(target, part)

scripts/panels.py

@@ -25,9 +25,15 @@ import sys
 
 from plateup import plateup
 
+def usage():
+    print("\nusage:\n\tpanels [target_config] - Aggregate DXF files for routing together.")
+    sys.exit(1)
+
 if __name__ == '__main__':
+    if len(sys.argv) > 2: usage()
+
     if len(sys.argv) > 1:
         target = sys.argv[1]
     else:
         target = None
-    plateup(target, 'dxf')
+    plateup(target, 'dxf', usage)

scripts/plateup.py

@@ -31,11 +31,11 @@ from shutil import copyfile
 source_dirs = { "stl" : "platters", "dxf" : "panels" }
 target_dirs = { "stl" : "printed",  "dxf" : "routed" }
 
-def plateup(target, part_type):
+def plateup(target, part_type, usage = None):
     #
     # Make the target directory
     #
-    top_dir = set_config(target)
+    top_dir = set_config(target, usage)
     parts_dir = top_dir + part_type + 's'
     target_dir = parts_dir + '/' + target_dirs[part_type]
     source_dir = top_dir + source_dirs[part_type]

scripts/platters.py

@@ -25,9 +25,15 @@ import sys
 
 from plateup import plateup
 
+def usage():
+    print("\nusage:\n\tplatters [target_config] - Aggregate STL files for printing together.")
+    sys.exit(1)
+
 if __name__ == '__main__':
+   if len(sys.argv) > 2: usage()
+
     if len(sys.argv) > 1:
         target = sys.argv[1]
     else:
         target = None
-    plateup(target, 'stl')
+    plateup(target, 'stl', usage)

scripts/render.py

@@ -30,17 +30,23 @@ from tests import do_cmd, update_image, colour_scheme, background
 from deps import mtime
 from colorama import init
 
+def usage():
+    print("\nusage:\n\trender [target_config] - Render images of the stl and dxf files.");
+    sys.exit(1)
+
 def render(target, type):
     #
     # Make the target directory
     #
-    target_dir = set_config(target) + type + 's'
+    top_dir = set_config(target, usage)
+    target_dir = top_dir + type + 's'
+    bom_dir = top_dir + 'bom'
     if not os.path.isdir(target_dir):
         os.makedirs(target_dir)
     #
     # Find all the parts
     #
-    parts = bom_to_parts(target_dir, type)
+    parts = bom_to_parts(bom_dir, type)
     #
     # Remove unused png files
     #
@@ -71,6 +77,7 @@ def render(target, type):
 
 if __name__ == '__main__':
     init()
+    if len(sys.argv) > 2: usage()
     target =  sys.argv[1] if len(sys.argv) > 1 else None
     render(target, 'stl')
     render(target, 'dxf')

scripts/set_config.py

@@ -45,20 +45,27 @@ def valid_targets_string():
     return result
 
 
-def set_config(target):
+def set_config(target, usage = None):
+    if target and target[:1] == '-' and usage: usage()
     targets = valid_targets()
     if not target:
         if not targets:
             return ""
         print("Must specify a configuration: " + valid_targets_string())
+        if usage:
+            usage()
         sys.exit(1)
 
     if not targets:
         print("Not a muli-configuration project (no config_<target>.scad files found)")
+        if usage:
+            usage()
         sys.exit(1)
 
     if not target in targets:
         print(target + " is not a configuration, avaliable configurations are: " + valid_targets_string())
+        if usage:
+            usage()
         sys.exit(1)
 
     fname = source_dir + "/target.scad"
@@ -75,10 +82,13 @@ def set_config(target):
             f. write(text);
     return target + "/"
 
+def usage():
+        print("\nusage:\n\tset_config config_name")
+        sys.exit(1)
+
 if __name__ == '__main__':
     args = len(sys.argv)
     if args == 2:
-       set_config(sys.argv[1])
+       set_config(sys.argv[1], usage)
     else:
-        print("usage: set_config config_name")
-        sys.exit(1)
+        usage()

scripts/tests.py

@@ -85,6 +85,10 @@ def depluralise(name):
 def is_plural(name):
     return name != depluralise(name)
 
+def usage():
+    print("\nusage:\n\ttests [test_name1] ... [test_nameN] - Run specified tests or all tests in none specified.");
+    sys.exit(1)
+
 def tests(tests):
     scad_dir = "tests"
     deps_dir = scad_dir + "/deps"
@@ -96,6 +100,7 @@ def tests(tests):
     doc_name = "readme.md"
     index = {}
     bodies = {}
+    done = []
     times.read_times()
     options.check_options(deps_dir)
     #
@@ -109,13 +114,15 @@ def tests(tests):
     #
     # List of individual part files
     #
-    scads = [i for i in sorted(os.listdir(scad_dir)) if i[-5:] == ".scad"]
+    scads = [i for i in sorted(os.listdir(scad_dir), key = lambda s: s.lower()) if i[-5:] == ".scad"]
 
     for scad in scads:
         base_name = scad[:-5]
         if not tests or base_name in tests:
+            done.append(base_name)
             print(base_name)
             cap_name = base_name[0].capitalize() + base_name[1:]
+            base_name = base_name.lower()
             scad_name = scad_dir + '/' + scad
             png_name = png_dir + '/' + base_name + '.png'
             bom_name = bom_dir + '/' + base_name + '.json'
@@ -140,11 +147,14 @@ def tests(tests):
                 print("Can't find implementation!")
                 continue
 
-            vsplit = "M"
+            vsplit = "AKR" + chr(ord('Z') + 1)
             vtype = locations[0][1]
-            types = [vtype + ' A-' + vsplit[0], vtype + ' ' + chr(ord(vsplit) + 1) + '-Z'] + [loc[1] for loc in locations[1 :]]
+            types = [vtype + ' ' + vsplit[i] + '-'  + chr(ord(vsplit[i + 1]) - 1) for i in range(len(vsplit) - 1)] + [loc[1] for loc in locations[1 :]]
             if type == vtype:
-                type = types[0] if cap_name[0] <= vsplit else types[1]
+                for i in range(1, len(vsplit)):
+                    if cap_name[0] < vsplit[i]:
+                         type = types[i - 1]
+                         break
 
             for t in types:
                 if not t in bodies:
@@ -188,10 +198,10 @@ def tests(tests):
 
             body += ["![%s](%s)\n" %(base_name, png_name)]
 
-            dname = deps_name(deps_dir, scad)
+            dname = deps_name(deps_dir, scad.lower())
             oldest = png_name if mtime(png_name) < mtime(bom_name) else bom_name
             changed = check_deps(oldest, dname)
-            changed = times.check_have_time(changed, scad_name)
+            changed = times.check_have_time(changed, scad_name.lower())
             changed = options.have_changed(changed, oldest)
             if changed:
                 print(changed)
@@ -230,6 +240,14 @@ def tests(tests):
             body += ['\n<a href="#top">Top</a>']
             body += ["\n---"]
 
+    for test in done:
+        if test in tests:
+            tests.remove(test)
+    if tests:
+        for test in tests:
+            print(Fore.MAGENTA + "Could not find a test called", test, Fore.WHITE)
+        usage()
+
     with open(doc_name, "wt") as doc_file:
         print('# NopSCADlib', file = doc_file)
         print('''\
@@ -275,4 +293,6 @@ See [usage](docs/usage.md) for requirements, installation instructions and a usa
     do_cmd('codespell -L od readme.md'.split())
 
 if __name__ == '__main__':
+    for arg in sys.argv[1:]:
+        if arg[:1] == '-': usage()
     tests(sys.argv[1:])

scripts/views.py

@@ -89,12 +89,24 @@ def eop(print_mode, doc_file, last = False, first = False):
 def pad(s, before, after = 0):
     return ' ' * before + str(s) + ' ' * after
 
+def titalise(name):
+    cap_next = True
+    result = ''
+    for c in name.replace('_', ' '):
+        result = result + (c.upper() if cap_next else c);
+        cap_next = c == ' '
+    return result
+
+def usage():
+    print("\nusage:\n\t views [target_config] [<name1>_assembly] ... [<nameN>_assembly] - Create assembly images and readme.")
+    sys.exit(1)
+
 def views(target, do_assemblies = None):
     done_assemblies = []
     #
     # Make the target directory
     #
-    top_dir = set_config(target)
+    top_dir = set_config(target, usage)
     target_dir = top_dir + 'assemblies'
     deps_dir = top_dir + "deps"
     bom_dir = top_dir + "bom"
@@ -109,9 +121,10 @@ def views(target, do_assemblies = None):
     with open(bounds_fname) as json_file:
         bounds_map = json.load(json_file)
     #
-    # Find all the assemblies
+    # Find all the assemblies and remove any old views
     #
     assemblies = bom_to_assemblies(bom_dir, bounds_map)
+    lc_assemblies = [ass.lower() for ass in assemblies]
     for file in os.listdir(target_dir):
         if file.endswith('.png'):
             assembly = file[:-4].replace('_assembled', '_assembly')
@@ -124,8 +137,7 @@ def views(target, do_assemblies = None):
     # Find all the scad files
     #
     main_blurb = None
-    lib_dir = os.environ['OPENSCADPATH'] + '/NopSCADlib/printed'
-    for dir in [source_dir, source_dir + '/printed', lib_dir]:
+    for dir in source_dirs(bom_dir):
         if os.path.isdir(dir):
             for filename in os.listdir(dir):
                 if filename.endswith('.scad'):
@@ -140,22 +152,24 @@ def views(target, do_assemblies = None):
                         if len(words) and words[0] == "module":
                             module = words[1].split('(')[0]
                             if is_assembly(module):
-                                if module in assemblies:
+                                lc_module = module.lower()
+                                if lc_module in lc_assemblies:
+                                    real_name = assemblies[lc_assemblies.index(lc_module)]
                                     #
                                     # Scrape the assembly instructions
                                     #
                                     for ass in flat_bom:
-                                        if ass["name"] == module:
+                                        if ass["name"] == real_name:
                                             if not "blurb" in ass:
                                                 ass["blurb"] = blurb.scrape_module_blurb(lines[:line_no])
                                             break
-                                    if not do_assemblies or module in do_assemblies:
+                                    if not do_assemblies or real_name in do_assemblies:
                                         #
                                         # Run openscad on the created file
                                         #
                                         dname = deps_name(deps_dir, filename)
                                         for explode in [0, 1]:
-                                            png_name = target_dir + '/' + module + '.png'
+                                            png_name = target_dir + '/' + real_name + '.png'
                                             if not explode:
                                                 png_name = png_name.replace('_assembly', '_assembled')
                                             changed = check_deps(png_name, dname)
@@ -181,7 +195,7 @@ def views(target, do_assemblies = None):
                                             if mtime(png_name) > mtime(tn_name):
                                                 do_cmd(("magick "+ png_name + " -trim -resize 280x280 -background " + background + " -gravity Center -extent 280x280 -bordercolor " + background + " -border 10 " + tmp_name).split())
                                                 update_image(tmp_name, tn_name)
-                                    done_assemblies.append(module)
+                                    done_assemblies.append(real_name)
                                 else:
                                     if module == 'main_assembly':
                                         main_blurb = blurb.scrape_module_blurb(lines[:line_no])
@@ -216,7 +230,7 @@ def views(target, do_assemblies = None):
             print('1. [Parts list](#Parts_list)', file = doc_file)
             for ass in flat_bom:
                 name =  ass["name"]
-                cap_name = name.replace('_', ' ').title()
+                cap_name = titalise(name)
                 print('1. [%s](#%s)' % (cap_name, name), file = doc_file)
             print(file = doc_file)
             eop(print_mode, doc_file)
@@ -237,7 +251,7 @@ def views(target, do_assemblies = None):
                         else:
                             things[t][thing] = ass[t][thing]
             for ass in flat_bom:
-                name = ass["name"][:-9].replace('_', ' ').title().replace(' ','&nbsp;')
+                name = titalise(ass["name"][:-9]).replace(' ','&nbsp;')
                 print('| <span style="writing-mode: vertical-rl; text-orientation: mixed;">%s</span> ' % name, file = doc_file, end = '')
             print('| <span style="writing-mode: vertical-rl; text-orientation: mixed;">TOTALS</span> |  |', file = doc_file)
 
@@ -274,7 +288,7 @@ def views(target, do_assemblies = None):
             #
             for ass in flat_bom:
                 name = ass["name"]
-                cap_name = name.replace('_', ' ').title()
+                cap_name = titalise(name)
 
                 if ass["count"] > 1:
                     print('<a name="%s"></a>\n## %d x %s' % (name, ass["count"], cap_name), file = doc_file)
@@ -385,4 +399,7 @@ if __name__ == '__main__':
     else:
         target, assemblies = None, sys.argv[1:]
 
+    for a in assemblies:
+        if a[-9:] != "_assembly": usage()
+
     views(target, assemblies)

tests/circlips.scad

@@ -0,0 +1,40 @@
+//
+// 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>
+use <../utils/layout.scad>
+
+include <../vitamins/circlips.scad>
+
+module circlips(all = false)
+    layout([for(c = circlips) circlip_d3(c)], 10, false) let(c = circlips[$i]) {
+        gap = circlip_d3(c) + 2;
+
+        internal_circlip(c, 1);
+
+        if(all) {
+            translate([0, gap])
+                internal_circlip(c, 0);
+
+            translate([0, 2 * gap])
+                internal_circlip(c, -1);
+        }
+    }
+
+if($preview)
+    circlips(true);

tests/components.scad

@@ -26,14 +26,13 @@ module resistors()
         resistor(resistors[$i]);
 
 module al_clad_resistors()
-    layout([for(a = al_clad_resistors) al_clad_width(a)])
+    layout([for(a = al_clad_resistors) al_clad_width(a)], 5, true)
         rotate(90)
             al_clad_resistor_assembly(al_clad_resistors[$i], 4.7)
                 screw(al_clad_hole(al_clad_resistors[$i]) > 3 ? M3_pan_screw : M2p5_pan_screw, 16);
 
-
 module thermal_cutouts()
-    layout([for(t = thermal_cutouts) tc_length(t)])
+    layout([for(t = thermal_cutouts) tc_length(t)], 5, true)
         thermal_cutout(thermal_cutouts[$i]);
 
 module components() {
@@ -42,7 +41,7 @@ module components() {
     translate([0, 50])
         TO220("Generic TO220 package");
 
-    translate([30, 50])
+    translate([50, 50])
         panel_USBA();
 
     translate([0,80])

tests/extrusions.scad

@@ -23,7 +23,7 @@ include <../vitamins/extrusions.scad>
 
 module extrusions()
     layout([for(e = extrusions) extrusion_width(e)], 10)
-        extrusion(extrusions[$i], 80);
+        extrusion(extrusions[$i], 80, cornerHole = extrusion_width(extrusions[$i]) > 20);
 
 if ($preview)
     extrusions();

tests/fuseholder.scad

@@ -24,4 +24,5 @@ module fuseholders()
     fuseholder(6);
 
 if($preview)
-    fuseholders();
+    let($show_threads = 1)
+        fuseholders();

tests/jack.scad

@@ -32,4 +32,5 @@ module jacks() {
 }
 
 if($preview)
-    jacks();
+    let($show_threads = true)
+        jacks();

tests/nuts.scad

@@ -61,6 +61,19 @@ module nuts() {
             if(n == M4_nut)
                 sliding_t_nut(M4_hammer_nut);
        }
+
+       translate([0, 100]) {
+            if(n == M3_nut)
+               nut_square(M3nS_thin_nut);
+            if(n == M4_nut)
+               nut_square(M4nS_thin_nut);
+            if(n == M5_nut)
+               nut_square(M5nS_thin_nut);
+            if(n == M6_nut)
+               nut_square(M6nS_thin_nut);
+            if(n == M8_nut)
+               nut_square(M8nS_thin_nut);
+       }
     }
 }
 

tests/wire.scad

@@ -18,7 +18,7 @@
 //
 include <../utils/core/core.scad>
 
-include <../vitamins/wire.scad>
+use <../vitamins/wire.scad>
 
 bundle = [7, 1.4];
 

utils/maths.scad

@@ -56,6 +56,13 @@ function rotate(a, v) = //! Generate a 4x4 rotation matrix, ```a``` can be a vec
                               [ 0,                           0,                           0,                           1]
                          ];
 
+function rot3_z(a) = //! Generate a 3x3 matrix to rotate around z
+    let(c = cos(a),
+        s = sin(a))
+        [ [ c, -s,  0],
+          [ s,  c,  0],
+          [ 0,  0,  1] ];
+
 function scale(v) = let(s = is_list(v) ? v : [v, v, v]) //!  Generate a 4x4 matrix that scales by ```v```, which can be a vector of xyz factors or a scalar to scale all axes equally
                         [
                           [s.x, 0,   0,   0],

utils/thread.scad

@@ -79,7 +79,7 @@ module thread(dia, pitch, length, profile, center = true, top = -1, bot = -1, st
     sides = r2sides4n(r);
     step_angle = 360 / sides;
     segs = ceil(turns * sides);
-    leadin = ceil(sides / starts);
+    leadin = min(ceil(sides / starts), floor(turns * sides / 2));
     final = floor(turns * sides) - leadin;
     path = [for(i = [0 : segs],
                 R = i < leadin && bot < 0 ? r + dir * (h - h * i / leadin)

vitamins/circlip.scad

@@ -0,0 +1,90 @@
+//
+// 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/>.
+//
+
+//
+//! Circlips aka tapered retaining rings.
+//
+include <../utils/core/core.scad>
+include <../utils/sector.scad>
+include <../utils/round.scad>
+include <../utils/maths.scad>
+
+function circlip_d1(type)        = type[1];     //! Nominal OD, i.e. diameter of tube
+function circlip_d2(type)        = type[2];     //! Groove diameter, i.e. OD when installed
+function circlip_d3(type)        = type[3];     //! Relaxed OD when not installed
+function circlip_thickness(type) = type[4];     //! Thickness
+function circlip_a(type)         = type[5];     //! Size of the lugs
+function circlip_b(type)         = type[6];     //! Widest part of the taper
+function circlip_d5(type)        = type[7];     //! Plier hole diameter
+
+circlip_colour = grey20;
+closed_angle = 25;
+
+module internal_circlip(type, open = 0) { //! Draw specified internal circlip, open = 0, for nominal size installed, 1 for relaxed uninstalled, -1 for squeezed to install
+    d1 = circlip_d1(type);
+
+    vitamin(str("circlip(", type[0], "): Circlip internal ", d1, "mm"));
+    d3 = circlip_d3(type);
+    d2 = circlip_d2(type);
+    a = circlip_a(type);
+    b = circlip_b(type);
+    d5 = circlip_d5(type);
+
+    od = lookup(open, [[-1, d1], [0, d2], [1, d3]]);
+    or = od / 2;
+    c = (d3 - d1);
+
+    angle = (od - d1) / d1 * 360 + closed_angle;
+    tab_angle = 360 * a / PI / od;
+    p = [0, -or + b / 2, 1] * rot3_z(angle / 2 + tab_angle);
+    pitch = (or - a / 2);
+    y_offset = (sqr(p.x) + sqr(p.y) - sqr(or - b)) / (or - b - p.y) / 2;
+    ir = or - b + y_offset;
+    color(circlip_colour)
+        linear_extrude(height = circlip_thickness(type), center = true)
+            round((a - d5) / 5)
+            union() {
+                difference() {
+                    circle(or);
+
+                    translate([0, -y_offset])
+                        circle(ir);
+
+                    sector(d3 / 2 + 1, 270 - angle / 2 - tab_angle, 270 + angle / 2 + tab_angle);
+
+                }
+                for(side = [-1, 1])
+                    intersection() {
+                        circle(or);
+
+                        rotate(side * (angle + tab_angle) / 2)
+                            difference() {
+                                hull() {
+                                    translate([0, -pitch])
+                                        circle(d = a);
+
+                                    translate([0, -pitch - a])
+                                        circle(d = 1.5 * a);
+                                }
+                                translate([0, -pitch])
+                                    circle(d = d5);
+                            }
+                    }
+            }
+}

vitamins/circlips.scad

@@ -0,0 +1,28 @@
+//
+// 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/>.
+//
+//                            d1  d2    d3    s    a    b    d5
+circlip_12i = ["circlip_12i", 12, 12.5, 13.0, 1.0, 3.4, 1.7, 1.5];
+circlip_15i = ["circlip_15i", 15, 15.7, 16.2, 1.0, 3.7, 2.0, 1.7];
+circlip_19i = ["circlip_19i", 19, 20.0, 20.5, 1.0, 4.1, 2.2, 2.0];
+circlip_21i = ["circlip_21i", 21, 22.0, 22.5, 1.0, 4.2, 2.4, 2.0];
+circlip_28i = ["circlip_28i", 28, 29.4, 30.1, 1.2, 4.8, 2.9, 2.0];
+
+circlips = [circlip_12i, circlip_15i, circlip_19i, circlip_21i, circlip_28i];
+
+use <circlip.scad>

vitamins/extrusion.scad

@@ -101,7 +101,8 @@ module extrusion_cross_section(type, cornerHole) {
         translate([0,i*width+(width-height)/2])
             difference() {
                 square([centerSquare,centerSquare],center=true);
-                circle(d=extrusion_center_hole(type));
+                if(extrusion_center_hole(type)>0)
+                    circle(d=extrusion_center_hole(type));
             }
     translate([0,(width-height)/2])
         for(angle=[0,90])

vitamins/extrusions.scad

@@ -20,6 +20,7 @@
 // Extrusion
 //
 //                   W   H    d1   d2   s  cw   cwi    t  st  f
+E1515  = [ "E1515", 15, 15,  2.5,   0,5.7,3.4,  5.7, 1.1,1.1, 0.5 ];
 E2020  = [ "E2020", 20, 20,  4.2,   3,  8,  6, 12.0,   2,  2, 1 ];
 E2040  = [ "E2040", 20, 40,  4.2,   3,  8,  6, 12.0,   2,  2, 1 ];
 E2060  = [ "E2060", 20, 60,  4.2,   3,  8,  6, 12.0,   2,  2, 1 ];
@@ -29,7 +30,7 @@ E3060  = [ "E3060", 30, 60,  6.8, 4.2, 12,  8, 16.5,   2,  2, 1 ];
 E4040  = [ "E4040", 40, 40, 10.5, 6.0, 15, 10, 20.0, 5.5,  3, 1 ];
 E4080  = [ "E4080", 40, 80, 10.5, 6.0, 15, 10, 20.0, 5.5,  3, 1 ];
 
-extrusions = [E2020,E2040,E2060,E2080,E3030,E3060,E4040,E4080];
+extrusions = [E1515,E2020,E2040,E2060,E2080,E3030,E3060,E4040,E4080];
 
 use <extrusion.scad>
 

vitamins/fuseholder.scad

@@ -23,6 +23,7 @@
 include <../utils/core/core.scad>
 include <spades.scad>
 use <../utils/tube.scad>
+use <../utils/thread.scad>
 
 module fuseholder_hole(h = 100) //! Hole with flats for fuseholder
     extrude_if(h)
@@ -39,7 +40,8 @@ module fuseholder(thickness) { //! Fuseholder with nut in place for specified pa
     flange_d = fuseholder_diameter();
     flange_t = 2;
     height = 33.2;
-    thread_d = 11.7;
+    thread_d = 12;
+    thread_p = 1;
     thread = 15;
     bot_d = 10.4;
     top_d = 8.7;
@@ -59,24 +61,28 @@ module fuseholder(thickness) { //! Fuseholder with nut in place for specified pa
     //
     // Nut
     //
+    colour = grey40;
     vflip()
         translate_z(thickness)
-            explode(height)
-                color("dimgrey") {
-                    tube(or = nut_d / 2, ir = 5, h = nut_flange_t, center = false);
+            explode(height) {
+                color(colour) {
+                    tube(or = nut_d / 2, ir = thread_d / 2, h = nut_flange_t, center = false);
 
                     linear_extrude(height = nut_t)
                         difference() {
                             circle(d = nut_d, $fn = 6);
 
-                            circle(5);
+                            circle(d = thread_d);
                         }
                 }
+                if(show_threads)
+                    female_metric_thread(thread_d, thread_p, nut_t, false, colour = colour);
+            }
     //
     // Body
     //
     explode(height + 5, offset = -height - 4) {
-        color("dimgrey") {
+        color(colour) {
             tube(or = flange_d / 2, ir = 5.2, h = flange_t, center = false);
 
             cylinder(r = 5, h = flange_t - 1);
@@ -89,26 +95,35 @@ module fuseholder(thickness) { //! Fuseholder with nut in place for specified pa
                 }
 
             vflip() {
-                linear_extrude(height = thread)
-                    intersection() {
-                        circle(d = thread_d);
+                if(!show_threads)
+                    linear_extrude(height = thread)
+                        intersection() {
+                            circle(d = thread_d - 0.3);
 
-                        square([100, 10.8], center = true);
-                    }
-                    render() difference() {
-                        translate_z(thread)
-                            cylinder(d1 = bot_d, d2 = top_d, h = height - flange_t - thread);
+                            square([100, 10.8], center = true);
+                        }
+                render() difference() {
+                    translate_z(thread)
+                        cylinder(d1 = bot_d, d2 = top_d, h = height - flange_t - thread);
 
-                        for(side = [-1, 1])
-                            translate([side * (contact_slot_d / 2 + 1) - 1, -contact_slot_w / 2, contact_slot_z])
-                                 cube([2, contact_slot_w, 100]);
-                    }
+                    for(side = [-1, 1])
+                        translate([side * (contact_slot_d / 2 + 1) - 1, -contact_slot_w / 2, contact_slot_z])
+                             cube([2, contact_slot_w, 100]);
+                }
             }
+            if(show_threads)
+                vflip()
+                    render() intersection() {
+                        male_metric_thread(thread_d, thread_p, thread, false, colour = colour);
+
+                        translate_z(thread / 2)
+                            cube([100, 10.8, thread + 1], center = true);
+                    }
         }
         //
         // Side contacts
         //
-        color("silver") vflip()
+        color(silver) vflip()
             for(side = [-1, 1])
                 translate([side * contact_slot_d / 2, 0, contact_slot_z])
                     rotate([0, -70, 90 - side * 90])

vitamins/green_terminal.scad

@@ -177,6 +177,3 @@ module green_terminal(type, ways, skip = [], colour = "lime") { //! Draw green t
         translate([0, i * pitch - width / 2 + pitch / 2])
             single(in(skip, i));
 }
-
-module terminal_254(ways, skip = []) //! Draw 0.1" terminal block
-    green_terminal(gt_2p54, ways, skip);

vitamins/jack.scad

@@ -25,6 +25,7 @@ include <../core.scad>
 include <spades.scad>
 use <../utils/tube.scad>
 use <../utils/rounded_cylinder.scad>
+use <../utils/thread.scad>
 use <ring_terminal.scad>
 
 function jack_4mm_hole_radius() = 8/2; //! Panel hole radius for 4mm jack
@@ -39,6 +40,7 @@ module jack_4mm(colour, thickness, display_colour = false) { //! Draw a 4mm jack
     sleaved_d = 6.4;
     thread = 10.4;
     thread_d = 8;
+    thread_p = 0.75;
     nut_d = 9.8;
     nut_t = 3;
     barrel_d = 5.4;
@@ -56,28 +58,33 @@ module jack_4mm(colour, thickness, display_colour = false) { //! Draw a 4mm jack
             }
             square([flange_id, 100], center = true);
         }
-        color("silver") rotate_extrude() difference() {
+        color(silver) rotate_extrude() difference() {
             union() {
                 translate([0, -thread])
-                    square([thread_d / 2, thread]);
-
-                *translate([0, -nut_t - thickness])
-                    square([nut_d / 2,  nut_t]);
+                    square([thread_d / 2 - (show_threads ? thread_p / 2 : 0), thread]);
 
                 translate([0, -barrel])
                     square([barrel_d / 2, barrel]);
             }
             square([4, 2 * (barrel - 1)], center = true);
         }
+        if(show_threads)
+            translate_z(-thread)
+                male_metric_thread(thread_d, thread_p, thread, false, solid = false, colour = silver);
+
         translate_z(-length + flange_t + spade)
             vflip()
                 spade(spade4p8l, spade);
     }
     translate_z(-thickness)
         explode(-length)
-            color("silver")
-                vflip()
+            vflip() {
+                color(silver)
                     tube(ir = thread_d / 2, or = nut_d / 2, h = nut_t, center = false);
+
+                if(show_threads)
+                    female_metric_thread(thread_d, thread_p, nut_t, false, colour = silver);
+            }
 }
 
 function jack_4mm_shielded_hole_radius() = 12/2; //! Panel hole radius for 4mm shielded jack
@@ -90,14 +97,16 @@ module jack_4mm_shielded(colour, thickness, display_colour = false) { //! Draw a
     sleaved = 21;
     sleaved_d = 10.7;
     thread = 14;
-    thread_d = 11.7;
+    thread_d = 12;
+    thread_p = 0.75;
     nut_d = 14.4;
     nut_t = 5;
     length = 32;
     spade = 8.5;
+    actual_colour = display_colour ? display_colour : colour;
 
     explode(length, offset = -length + flange_t) {
-        color(display_colour ? display_colour : colour) {
+        color(actual_colour) {
             rounded_cylinder(r = flange_d / 2, h = flange_t, r2 = 1, ir = 4.5);
 
             rotate_extrude() difference() {
@@ -105,8 +114,9 @@ module jack_4mm_shielded(colour, thickness, display_colour = false) { //! Draw a
                     translate([0, -sleaved])
                         square([sleaved_d  / 2, sleaved + flange_t]);
 
-                    translate([0, -thread])
-                        square([thread_d / 2, thread]);
+                    if(!show_threads)
+                        translate([0, -thread])
+                            square([thread_d / 2, thread]);
                 }
                 square([flange_id, 100], center = true);
 
@@ -115,8 +125,13 @@ module jack_4mm_shielded(colour, thickness, display_colour = false) { //! Draw a
                     square([6, 2 * sleaved], center = true);
                 }
             }
+
+            if(show_threads)
+                translate_z(-thread)
+                    male_metric_thread(thread_d, thread_p, thread, false, solid = false);
         }
-        color("silver")
+
+        color(silver)
             translate_z(-length + flange_t + spade - 0.5)
                 cylinder(d = 4.8, h = 0.5);
 
@@ -127,10 +142,13 @@ module jack_4mm_shielded(colour, thickness, display_colour = false) { //! Draw a
 
     translate_z(-thickness)
         explode(-length)
-            color("silver")
-                vflip()
+            vflip() {
+                color(silver)
                     tube(ir = thread_d / 2, or = nut_d / 2, h = nut_t, center = false);
 
+                if(show_threads)
+                    female_metric_thread(thread_d, thread_p, nut_t, false, colour = silver);
+            }
 }
 
 function post_4mm_diameter() = 13; //! Outer diameter of 4mm binding post
@@ -167,14 +185,15 @@ module post_4mm(colour, thickness, display_colour = false) { //! Draw a 4mm bind
 
     post_od = 9.5;
     post_metal = 0.2;
-    thread_d = 3.5;
+    thread_d = 3.6;
+    thread_p = 0.66;
     thread_l = 15;
     post_d = 7;
     post_h = 14;
 
     ringterm = ["", 6.3, 3.8, 16.7, 3, 1.6, 0.3, M4_dome_screw];
 
-    module washer() {
+    module washer() color(silver) {
         washer_t = 0.65;
 
         tube(or = 7.6 / 2, ir = thread_d / 2, h = washer_t, center = false);
@@ -186,11 +205,14 @@ module post_4mm(colour, thickness, display_colour = false) { //! Draw a 4mm bind
     module nut() {
         nut_t = 2.3;
 
-        linear_extrude(height = nut_t) difference() {
-            circle(d = 6.3 / cos(30), $fn = 6);
+        color(silver)
+            linear_extrude(height = nut_t) difference() {
+                circle(d = 6.3 / cos(30), $fn = 6);
 
-            circle(d = thread_d);
-        }
+                circle(d = thread_d);
+            }
+        if(show_threads)
+            female_metric_thread(thread_d, thread_p, nut_t, false, colour = silver);
 
         translate_z(nut_t)
             children();
@@ -219,8 +241,7 @@ module post_4mm(colour, thickness, display_colour = false) { //! Draw a 4mm bind
                         render() difference() {
                             rotate_extrude(angle = 360 / 8)
                                 polygon([
-                                    [0,          0],
-                                    [0,          2],
+                                    [post_d / 2, 0],
                                     [post_d / 2, 2],
                                     [post_d / 2, 17.5],
                                     [11 / 2,     17.5],
@@ -238,7 +259,7 @@ module post_4mm(colour, thickness, display_colour = false) { //! Draw a 4mm bind
                 }
         }
 
-        color("silver") {
+        color(silver) {
             translate_z(post_metal)
                 cylinder(d = post_od, h = base_h);
 
@@ -252,9 +273,13 @@ module post_4mm(colour, thickness, display_colour = false) { //! Draw a 4mm bind
                     square([2, post_h]);
 
             }
-            vflip()
-                cylinder(d = thread_d, h = thread_l);
+            if(!show_threads)
+                vflip()
+                    cylinder(d = thread_d, h = thread_l);
         }
+        if(show_threads)
+            vflip()
+                male_metric_thread(thread_d, thread_p, thread_l, false, colour = silver);
     }
     explode(-15)
         color(actual_colour) {
@@ -272,12 +297,11 @@ module post_4mm(colour, thickness, display_colour = false) { //! Draw a 4mm bind
         }
     translate_z(-thickness - base_h)
         explode(-20, true)
-            color("silver")
-                vflip()
-                    not_on_bom()
-                        washer()
-                        explode(5, true) nut()
-                        explode(5, true) ring_terminal(ringterm)
-                        explode(5, true) washer()
-                        explode(5, true) nut();
+            vflip()
+                not_on_bom()
+                    washer()
+                    explode(5, true) nut()
+                    explode(5, true) ring_terminal(ringterm)
+                    explode(5, true) washer()
+                    explode(5, true) nut();
 }

vitamins/linear_bearing.scad

@@ -26,7 +26,7 @@ use <../utils/tube.scad>
 
 bearing_colour = grey70;
 groove_colour = grey60;
-seal_colour = grey20;
+seal_colour = grey30;
 
 
 function bearing_length(type)           = type[1];   //! Total length
@@ -61,5 +61,10 @@ module linear_bearing(type) { //! Draw specified linear bearing
             color(bearing_colour) translate_z(offset+gs) tube(or = or, ir = casing_ir, h = offset, center = false);
         }
     }
-    color(seal_colour) tube(or = casing_ir, ir = bearing_rod_dia(type) / 2, h = length - 0.5);
+    rod_r =  bearing_rod_dia(type) / 2;
+    color(seal_colour)
+        tube(or = casing_ir, ir = rod_r + eps, h = length - 0.5);
+
+    color(seal_colour * 0.8)
+        tube(or = rod_r * 1.12, ir = rod_r, h = length);
 }

vitamins/nut.scad

@@ -39,6 +39,10 @@ function nut_trap_depth(type) = type[6];        //! Depth of nut trap
 
 function nut_flat_radius(type) = nut_radius(type) * cos(30); //! Radius across the flats
 
+function nut_square_size(type)      = type[1]; //! Diameter of the corresponding screw
+function nut_square_width(type)     = type[2]; //! Width of the square nut
+function nut_square_thickness(type) = type[3]; //! Thickness of the square nut
+
 module nut(type, nyloc = false, brass = false, nylon = false) { //! Draw specified nut
     thread_d = nut_size(type);
     hole_rad  = thread_d / 2;
@@ -189,6 +193,31 @@ module extrusionSlidingNut(size, tabSizeY1, tabSizeY2, tabSizeZ, holeRadius, hol
             }
 }
 
+module nut_square(type, brass = false, nylon = false) { //! Draw specified square nut
+    thread_d = nut_size(type);
+    hole_rad  = thread_d / 2;
+    width = nut_square_width(type);
+    thickness = nut_square_thickness(type);
+    desc = brass ? "brass" : nylon ? "nylon" : "";
+    vitamin(str("nut(", type[0], arg(brass, false, "brass"), arg(nylon, false, "nylon"),
+                   "): Nut M", nut_size(type), "nS ", width, " x ", thickness, "mm ", desc));
+
+    colour = brass ? brass_colour : nylon ? grey30 : grey70;
+    color(colour)
+        difference() {
+            linear_extrude(height = thickness) {
+                difference() {
+                    square([width, width], center = true);
+
+                    circle(hole_rad);
+                }
+            }
+
+        }
+    if(show_threads)
+        female_metric_thread(thread_d, metric_coarse_pitch(thread_d), thickness, center = false, colour = colour);
+}
+
 function nut_trap_radius(nut, horizontal = false) = nut_radius(nut) + (horizontal ? layer_height / 4 : 0); //! Radius across the corners of a nut trap
 function nut_trap_flat_radius(nut, horizontal = false) = nut_trap_radius(nut, horizontal) * cos(30);       //! Radius across the flats of a nut trap
 

vitamins/nuts.scad

@@ -51,6 +51,20 @@ toggle_nut  =      ["toggle_nut",       6.1, 9.2, 1.5, 1.5,  M6_washer,     1.5]
 
 M4_wingnut  =      ["M4_wingnut",       4,  10,   3.75,8,    M4_washer,     0, 22, 10, 6, 3];
 
+// DIN 562 (thin) square nuts
+//                                                s    w    h
+//                                                c    i    e
+//                                                r    d    i
+//                                                e    t    g
+//                                                w    h    h
+//                                                          t
+//
+M3nS_thin_nut    =      ["M3nS_thin_nut",         3, 5.5, 1.8];
+M4nS_thin_nut    =      ["M4nS_thin_nut",         4,   7, 2.2];
+M5nS_thin_nut    =      ["M5nS_thin_nut",         5,   8, 2.7];
+M6nS_thin_nut    =      ["M6nS_thin_nut",         6,  10, 3.2];
+M8nS_thin_nut    =      ["M8nS_thin_nut",         8,  13,   4];
+
 //                                                                              sx  ty1 ty2 hammer
 M3_sliding_t_nut = ["M3_sliding_t_nut", 3,   6,   3.0, 4.0,  false,         0,  10,  10,  6, false];
 M4_sliding_t_nut = ["M4_sliding_t_nut", 4,   6,   3.25,4.5,  false,         0,  11,  10,  6, false];

vitamins/pcb.scad

@@ -26,7 +26,7 @@ include <../core.scad>
 include <buttons.scad>
 include <green_terminals.scad>
 include <pin_headers.scad>
-include <microswitches.scad>
+use <microswitch.scad>
 
 use <../utils/rounded_cylinder.scad>
 use <../utils/dogbones.scad>
@@ -63,17 +63,20 @@ function pcb_coord(type, p) = let(l = pcb_length(type), w = pcb_width(type)) //!
     [(p.x >= 0 ? p.x : l + p.x) - l / 2,
      (p.y >= 0 ? p.y : w + p.y) - w / 2];
 
-module pcb_screw_positions(type) { //! Positions children at the mounting hole positions
+module pcb_hole_positions(type, all = true) { // Positition children at the hole positions, including holes not used for screws
     holes = pcb_holes(type);
 
-    if(len(holes))
-        for($i = [0 : len(holes) - 1]) {
-            p = pcb_coord(type, holes[$i]);
-            translate([p.x, p.y, 0])
+    for($i = [0 : 1 : len(holes) - 1]) {
+        hole = holes[$i];
+        if(len(hole) == 2 || all)
+            translate(pcb_coord(type, hole))
                 children();
-       }
+   }
 }
 
+module pcb_screw_positions(type)  //! Positions children at the mounting hole positions
+    pcb_hole_positions(type, false) children();
+
 module chip(length, width, thickness, colour, cutout = false) //! Draw a coloured cube to represent a chip, or other rectangular component
     if(!cutout)
         color(colour)
@@ -837,7 +840,7 @@ module pcb(type) { //! Draw specified PCB
         else
             rounded_square([pcb_length(type), pcb_width(type)], r = pcb_radius(type));
 
-        pcb_screw_positions(type)
+        pcb_hole_positions(type)
             circle(d = pcb_hole_d(type) + eps);
 
         if(Len(grid))
@@ -847,7 +850,7 @@ module pcb(type) { //! Draw specified PCB
 
     color("silver")
         translate_z(t / 2)
-            pcb_screw_positions(type)
+            pcb_hole_positions(type)
                 tube(or =  max(pcb_land_d(type), 1) / 2, ir = pcb_hole_d(type) / 2, h = t + 2 * eps);
 
     fr4 = pcb_colour(type) != "sienna";

vitamins/pcbs.scad

@@ -342,7 +342,7 @@ PSU12V1A = ["PSU12V1A", "PSU 12V 1A", 67, 31, 1.7, 0, 3.9, 0, "green", true, [[3
 RAMPSEndstop = ["RAMPSEndstop", "RAMPS Endstop Switch",
     40.0, 16.0, 1.6, 0.5, 2.54, 0, "red",  false,
     [
-        [2, 2], [2, 13.5], [17, 13.5], [36, 13.5]
+        [2, 2, false], [2, 13.5, false], [17, 13.5], [36, 13.5]
     ],
     [
         [ 12,    8,   -90, "jst_xh", 3, true, "white", "silver"],

vitamins/scs_bearing_block.scad

@@ -27,6 +27,7 @@ use <screw.scad>
 use <nut.scad>
 use <washer.scad>
 use <linear_bearing.scad>
+use <circlip.scad>
 
 function scs_size(type)                 = [type[4],type[6],type[5]]; //! Size of scs bracket bounding block
 function scs_hole_offset(type)          = type[2]; //! Offset of bearing hole from base of block
@@ -36,6 +37,8 @@ function scs_screw(type)                = type[11]; //! Screw type
 function scs_screw_separation_x(type)   = type[8];  //! Screw separation in X direction
 function scs_screw_separation_z(type)   = type[9];  //! Screw separation in Z direction
 function scs_bearing(type)              = type[14]; //! Linear bearing used
+function scs_circlip(type)              = type[15]; //! Circlip used
+function scs_spacer(type)               = type[16]; //! Spacer used in long bearings
 
 
 sks_bearing_block_color = grey90;
@@ -57,6 +60,8 @@ module scs_bearing_block(type) { //! Draw the specified SCS bearing block
     S1 = scs_screw(type);
     S2 = type[12];
     L1 = type[13];
+    bearing = scs_bearing(type);
+    clip = scs_circlip(type);
 
     module right_trapezoid(base, top, height, h = 0, center = true) {//! A right angled trapezoid with the 90&deg; corner at the origin. 3D when ```h``` is nonzero, otherwise 2D
         extrude_if(h, center = center)
@@ -64,11 +69,11 @@ module scs_bearing_block(type) { //! Draw the specified SCS bearing block
     }
 
     boltHoleRadius = screw_clearance_radius(S1);
-    footHeight = min(0.75, (G - bearing_dia(scs_bearing(type)) - 1.5) / 2); // estimate, not specified on drawings
+    footHeight = min(0.75, (G - bearing_dia(bearing) - 1.5) / 2); // estimate, not specified on drawings
 
     color(sks_bearing_block_color) {
         linear_extrude(L, center = true) {
-            bearingRadius = bearing_dia(scs_bearing(type)) / 2;
+            bearingRadius = bearing_dia(bearing) / 2;
             // center section with bearing hole
             difference() {
                 union() {
@@ -117,8 +122,17 @@ module scs_bearing_block(type) { //! Draw the specified SCS bearing block
                                     circle(r = boltHoleRadius);
                         }
     }
-    not_on_bom() no_explode()
-        linear_bearing(scs_bearing(type));
+    not_on_bom() no_explode() {
+        spacer = scs_spacer(type);
+        for(end = spacer ? [-1, 1] : 0)
+            translate_z(end * (bearing_length(bearing) + spacer) / 2)
+                    linear_bearing(bearing);
+
+        for(end = [-1, 1])
+            translate_z(end * ((spacer ? 2 * bearing_length(bearing) + spacer : bearing_length(bearing)) + circlip_thickness(clip)) / 2)
+                rotate(180)
+                    internal_circlip(clip);
+    }
 }
 
 module scs_bearing_block_hole_positions(type) { //! Place children at hole positions

vitamins/scs_bearing_blocks.scad

@@ -22,18 +22,19 @@
 //
 
 include <linear_bearings.scad>
+include <circlips.scad>
 
 //                        T  h   E   W   L   F     G   B     C   K     S1            S2   L1  LB
-SCS6UU    = ["SCS6UU",    6,  9, 15, 30, 25, 18,   15, 20,   15, 5,    M4_cap_screw, 3.4,  8, LM6UU];
-SCS8UU    = ["SCS8UU",    6, 11, 17, 34, 30, 22,   18, 24,   18, 5,    M4_cap_screw, 3.4,  8, LM8UU];
-SCS10UU   = ["SCS10UU",   8, 13, 20, 40, 35, 26,   21, 28,   21, 6,    M5_cap_screw, 4.3, 12, LM10UU];
-SCS12UU   = ["SCS12UU",   8, 15, 21, 42, 36, 28,   24, 30.5, 26, 5.75, M5_cap_screw, 4.3, 12, LM12UU];
-SCS16UU   = ["SCS16UU",   9, 19, 25, 50, 44, 38.5, 32.5, 36, 34, 7,    M5_cap_screw, 4.3, 12, LM16UU];
+SCS6UU    = ["SCS6UU",    6,  9, 15, 30, 25, 18,   15, 20,   15, 5,    M4_cap_screw, 3.4,  8, LM6UU,  circlip_12i, 0];
+SCS8UU    = ["SCS8UU",    6, 11, 17, 34, 30, 22,   18, 24,   18, 5,    M4_cap_screw, 3.4,  8, LM8UU,  circlip_15i, 0];
+SCS10UU   = ["SCS10UU",   8, 13, 20, 40, 35, 26,   21, 28,   21, 6,    M5_cap_screw, 4.3, 12, LM10UU, circlip_19i, 0];
+SCS12UU   = ["SCS12UU",   8, 15, 21, 42, 36, 28,   24, 30.5, 26, 5.75, M5_cap_screw, 4.3, 12, LM12UU, circlip_21i, 0];
+SCS16UU   = ["SCS16UU",   9, 19, 25, 50, 44, 38.5, 32.5, 36, 34, 7,    M5_cap_screw, 4.3, 12, LM16UU, circlip_28i, 0];
 
-SCS8LUU   = ["SCS8LUU",   6, 11, 17, 34, 58, 22,   18, 24,   42, 5,    M4_cap_screw, 3.4,  8, LM8LUU];
-SCS10LUU  = ["SCS10LUU",  8, 13, 20, 40, 68, 26,   21, 28,   45, 6,    M5_cap_screw, 4.3, 12, LM10LUU];
-SCS12LUU  = ["SCS12LUU",  8, 15, 21, 42, 70, 28,   24, 30.5, 50, 5.75, M5_cap_screw, 4.3, 12, LM12LUU];
-SCS16LUU  = ["SCS16LUU",  9, 19, 25, 50, 85, 38.5, 32.5, 36, 60, 7,    M5_cap_screw, 4.3, 12, LM16LUU];
+SCS8LUU   = ["SCS8LUU",   6, 11, 17, 34, 58, 22,   18, 24,   42, 5,    M4_cap_screw, 3.4,  8, LM8UU,  circlip_15i, 4];
+SCS10LUU  = ["SCS10LUU",  8, 13, 20, 40, 68, 26,   21, 28,   45, 6,    M5_cap_screw, 4.3, 12, LM10UU, circlip_19i, 4];
+SCS12LUU  = ["SCS12LUU",  8, 15, 21, 42, 70, 28,   24, 30.5, 50, 5.75, M5_cap_screw, 4.3, 12, LM12UU, circlip_21i, 4];
+SCS16LUU  = ["SCS16LUU",  9, 19, 25, 50, 85, 38.5, 32.5, 36, 60, 7,    M5_cap_screw, 4.3, 12, LM16UU, circlip_28i, 4];
 
 
 scs_bearing_blocks = [SCS6UU, SCS8UU,  SCS10UU, SCS12UU, SCS16UU];