Extrusions now default to centered. New parts added to the libtest picture.

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

tests/extrusion_brackets.scad

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

tests/scs_bearing_blocks.scad

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

tests/sk_brackets.scad

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