Removed unneeded calls to render

TODO.md

@@ -4,5 +4,11 @@
 * Add place to mount electronics (likely just an extra part)
 * add slot for motor electronic connection
 * Add screw holes for idler mounts in rear corner
+* Raise motor mount on front left motor
+
 ## Electronics
 
+Must contain:
+* Two TMC2209 drivers
+* Two 4-pin screw terminals for motors
+* Arduino?

parts.scad

@@ -237,7 +237,7 @@ module idler_post(belt_height, toothed = true) {
 
 module flcorner() {
   bom_item();
-  render() {
+  union() {
     rotate([ 0, 0, 0 ]) {
       corner_base();
       rail_holder(false);
@@ -270,7 +270,7 @@ module flcorner() {
 
 module frcorner() {
   bom_item();
-  render() {
+  union() {
     rotate([ 0, 0, 90 ]) {
       corner_base();
       rail_holder(true);
@@ -304,7 +304,7 @@ module frcorner() {
 
 module blcorner() {
   bom_item();
-  render()
+  union()
   rotate([ 0, 0, 270 ]) {
     corner_base(extension = rail_holder_width);
     rail_holder(true);
@@ -320,7 +320,7 @@ module blcorner() {
 
 module brcorner() {
   bom_item();
-  render()
+  union()
   rotate([ 0, 0, 180 ]) {
     corner_base(extension = rail_holder_width);
     rail_holder(false);
@@ -339,7 +339,7 @@ module xsled_slider() {
   screw_tab_len = 20;
   screw_tab_thickness = 10;
 
-  render()
+  union()
       // translate([screw_tab_len, 0, 0])
       difference() {
     union() {
@@ -517,89 +517,96 @@ module xsled2() {
 
   echo("Ledge width: ", ledge_width - outside_ledge_width);
   // rail attachment points
-  for (xsign = [1, - 1], ysign = [1, - 1]) {
+  render() {
-    translate([sled_xsize / 2 * xsign, sled_ysize / 2 * ysign, 0])
+    for (xsign = [1, - 1], ysign = [1, - 1]) {
-      rotate([0, - 90 * xsign, 0]) {
+      translate([sled_xsize / 2 * xsign, sled_ysize / 2 * ysign, 0])
-        difference() {
+        rotate([0, - 90 * xsign, 0]) {
-          union() {
+          difference() {
-            cylinder(d = tab_thickness, h = tab_len);
+            union() {
-            translate(
+              cylinder(d = tab_thickness, h = tab_len);
-              [- tab_thickness / 2, ysign > 0 ? - tab_thickness / 2 : 0, 0])
+              translate(
-              cube([tab_thickness, tab_thickness / 2 + 1, tab_len]);
+                [- tab_thickness / 2, ysign > 0 ? - tab_thickness / 2 : 0, 0])
-          }
+                cube([tab_thickness, tab_thickness / 2 + 1, tab_len]);
-          translate([0, 0, - 0.5]) {
+            }
-            cylinder(d = bushing_od, h = bushing_len + 0.5);
+            translate([0, 0, - 0.5]) {
-            cylinder(d = rail_diam * 1.1, h = tab_len + 1);
+              cylinder(d = bushing_od, h = bushing_len + 0.5);
+              cylinder(d = rail_diam * 1.1, h = tab_len + 1);
+            }
           }
         }
-        if ($preview) {
+    }
+
+    // glass holding frame
+    difference() {
+      union() {
+        translate([- sled_xsize / 2, - inner_ysize / 2, 0])
+          rotate([0, 90, 0]) rotate([0, 0, 90]) linear_extrude(sled_xsize)
+            polygon(glass_holder_points);
+
+        translate([sled_xsize / 2, inner_ysize / 2, 0])
+          rotate([0, 90, 180]) rotate([0, 0, 90])
+            linear_extrude(sled_xsize) polygon(glass_holder_points);
+
+        translate([sled_xsize / 2, - inner_ysize / 2, 0])
+          rotate([0, 90, 90]) rotate([0, 0, 90])
+            linear_extrude(inner_ysize) polygon(glass_holder_points);
+
+        translate([- sled_xsize / 2, inner_ysize / 2, 0])
+          rotate([0, 90, - 90]) rotate([0, 0, 90])
+            linear_extrude(inner_ysize) polygon(glass_holder_points);
+      }
+
+      // grub screw points for glass levelling
+      for (x = [- 1, 1],
+        y = [- 1, 1]) {
+        translate([x * (sled_xsize / 2 - outside_ledge_width - inside_ledge_width / 2),
+            y * (inner_ysize / 2 - outside_ledge_width - inside_ledge_width / 2),
+          film_height])
+          rotate([180, 0, 0]) {
+            cylinder(d = 4, h = 50);
+            cylinder(d = 5, h = 4 + glass_thickness);
+          }
+      }
+
+      // finger notch
+      translate([
+        - 10, - inner_ysize / 2,
+
+                film_height - glass_thickness + 0.5 - finger_notch_smdepth + finger_notch_diam / 2
+        ]) rotate([90, 0, 0])
+        cylinder(d = finger_notch_diam, h = ledge_width * 3, center = true);
+
+    }
+
+    // belt attachment points
+    idler_spacing = sled_ysize / 6;
+    for (params = [
+        [true, [- sled_xsize / 2, idler_spacing, belt_height1]],
+        [false, [- sled_xsize / 2, - idler_spacing, belt_height2]],
+        [true, [sled_xsize / 2, idler_spacing, belt_height2]],
+        [false, [sled_xsize / 2, - idler_spacing, belt_height1]]
+      ]) {
+      should_mirror = params[1][0] > 0 ? params[0] : !params[0];
+      translate(params[1])
+        rotate([0, 0, params[1][0] > 0 ? 90 : - 90]) {
+          if (should_mirror) {
+            mirror([1, 0, 0])
+              gt2_clip(params[0]);
+          } else {
+            gt2_clip(params[0]);
+          }
+        }
+    }
+  }
+
+  if ($preview) {
+    for (xsign = [1, - 1], ysign = [1, - 1]) {
+      translate([sled_xsize / 2 * xsign, sled_ysize / 2 * ysign, 0])
+        rotate([0, - 90 * xsign, 0]) {
           bushing();
         }
-      }
-  }
-
-  // glass holding frame
-  difference() {
-    union() {
-      translate([- sled_xsize / 2, - inner_ysize / 2, 0])
-        rotate([0, 90, 0]) rotate([0, 0, 90]) linear_extrude(sled_xsize)
-          polygon(glass_holder_points);
-
-      translate([sled_xsize / 2, inner_ysize / 2, 0])
-        rotate([0, 90, 180]) rotate([0, 0, 90])
-          linear_extrude(sled_xsize) polygon(glass_holder_points);
-
-      translate([sled_xsize / 2, - inner_ysize / 2, 0])
-        rotate([0, 90, 90]) rotate([0, 0, 90])
-          linear_extrude(inner_ysize) polygon(glass_holder_points);
-
-      translate([- sled_xsize / 2, inner_ysize / 2, 0])
-        rotate([0, 90, - 90]) rotate([0, 0, 90])
-          linear_extrude(inner_ysize) polygon(glass_holder_points);
     }
-
-    // grub screw points for glass levelling
-    for (x = [- 1, 1],
-      y = [- 1, 1]) {
-      translate([x * (sled_xsize / 2 - outside_ledge_width - inside_ledge_width / 2),
-          y * (inner_ysize / 2 - outside_ledge_width - inside_ledge_width / 2),
-        film_height])
-        rotate([180, 0, 0]) {
-          cylinder(d = 4, h = 50);
-          cylinder(d = 5, h = 4 + glass_thickness);
-        }
-    }
-
-    // finger notch
-    translate([
-      - 10, - inner_ysize / 2,
-
-              film_height - glass_thickness + 0.5 - finger_notch_smdepth + finger_notch_diam / 2
-      ]) rotate([90, 0, 0])
-      cylinder(d = finger_notch_diam, h = ledge_width * 3, center = true);
-
   }
-
-  // belt attachment points
-  idler_spacing = sled_ysize / 6;
-  for (params = [
-      [true, [-sled_xsize/2, idler_spacing, belt_height1 ]],
-      [false, [-sled_xsize/2, -idler_spacing, belt_height2]],
-      [true, [sled_xsize/2, idler_spacing, belt_height2]],
-      [false, [sled_xsize/2, -idler_spacing, belt_height1]]
-    ]) {
-    should_mirror = params[1][0] > 0 ? params[0] : !params[0];
-    translate(params[1])
-      rotate([0,0,params[1][0] > 0 ? 90 : -90]) {
-        if (should_mirror ) {
-          mirror([1,0,0])
-            gt2_clip(params[0]);
-        } else {
-          gt2_clip(params[0]);
-        }
-      }
-  }
-
   color("#fff3") if ($preview) {
     // draw glass sheets
     translate(
@@ -608,7 +615,7 @@ module xsled2() {
         [
           sled_xsize - outside_ledge_width * 2,
           inner_ysize - outside_ledge_width * 2,
-          glass_thickness
+        glass_thickness
         ],
       center = true);
     *translate(