Updated z sled and bridge segments.

STLs/z_sled_parts.stl

@@ -440,20 +440,6 @@ solid Model
       vertex 29.5962 -42.475 0.025
     endloop
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       vertex 22.5918 -42.5 0
@@ -489,6 +475,13 @@ solid Model
       vertex 33.6249 32.475 0.3798
     endloop
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       vertex 22.5918 -36.75 0
@@ -797,6 +790,20 @@ solid Model
       vertex 22.5918 24.15 0
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       vertex 22.5918 24.15 0
@@ -804,6 +811,13 @@ solid Model
       vertex 22.5918 36.75 0
     endloop
   endfacet
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+    outer loop
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+      vertex 22.5918 36.75 0
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+  endfacet
   facet normal 0 1 0
     outer loop
       vertex 22.5918 42.5 0
@@ -818,6 +832,20 @@ solid Model
       vertex -0.05 -36.75 0
     endloop
   endfacet
+  facet normal 0 -1 0
+    outer loop
+      vertex 0 -36.75 0
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+      vertex 12 36.75 0
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   facet normal -1 0 0
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       vertex -0.05 36.75 0
@@ -867,48 +895,6 @@ solid Model
       vertex 29.5962 42.475 0.025
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     outer loop
       vertex 22.5918 -42.5 0
@@ -986,6 +972,13 @@ solid Model
       vertex 22.8376 -24.15 1.3937
     endloop
   endfacet
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+    outer loop
+      vertex -0.05 -36.75 0
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     outer loop
       vertex 22.5918 -42.5 0
@@ -1350,6 +1343,48 @@ solid Model
       vertex -10.575 24.15 3
     endloop
   endfacet
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+      vertex 12 -36.75 0
+      vertex 4 -32.75 4
+      vertex 8 -32.75 4
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+      vertex 0 36.75 0
+      vertex 8 32.75 4
+      vertex 4 32.75 4
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+      vertex 0 -36.75 0
+      vertex 4 -32.75 11
+      vertex 4 -32.75 4
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+  facet normal 0.7071 0.7071 0
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+      vertex 12 -36.75 0
+      vertex 8 -32.75 4
+      vertex 8 -32.75 11
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+      vertex 0 36.75 0
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+      vertex 4 32.75 11
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+      vertex 12 36.75 0
+      vertex 8 32.75 11
+      vertex 8 32.75 4
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       vertex 22.5918 36.75 0
@@ -1364,6 +1399,20 @@ solid Model
       vertex 23.6057 36.75 5.75
     endloop
   endfacet
+  facet normal 0 1 0
+    outer loop
+      vertex -0.05 -36.75 0
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+      vertex 23.6057 -36.75 5.75
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+      vertex -0.05 36.75 0
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   facet normal 0 1 0
     outer loop
       vertex 29.5918 42.5 0
@@ -1385,6 +1434,34 @@ solid Model
       vertex 25.1996 42.5 9.0418
     endloop
   endfacet
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+      vertex 0 -36.75 0
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+      vertex 0 36.75 0
+      vertex 4 32.75 11
+      vertex 0 36.75 15
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+      vertex 12 36.75 0
+      vertex 12 36.75 15
+      vertex 8 32.75 11
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   facet normal -1 0 0
     outer loop
       vertex -0.05 -41.75 0
@@ -1392,6 +1469,20 @@ solid Model
       vertex -0.05 -36.75 15
     endloop
   endfacet
+  facet normal 0 -1 0
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+      vertex 0 -36.75 0
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+      vertex 12 36.75 0
+      vertex 0 36.75 15
+      vertex 12 36.75 15
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+  endfacet
   facet normal -1 0 0
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       vertex -0.05 36.75 0
@@ -1455,111 +1546,6 @@ solid Model
       vertex 29.7814 42.475 1.0752
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@@ -2498,20 +2484,6 @@ solid Model
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       vertex 23.1208 -3 3
@@ -2675,30 +2647,30 @@ solid Model
   endfacet
   facet normal 0 1 0
     outer loop
-      vertex 9 -33.8 3
-      vertex 3 -33.8 12
-      vertex 9 -33.8 12
+      vertex 4 -32.75 4
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     outer loop
-      vertex 3 33.8 3
-      vertex 9 33.8 12
-      vertex 3 33.8 12
+      vertex 4 32.75 4
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@@ -2963,7 +2935,7 @@ solid Model
   facet normal 0 1 0
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       vertex 23.6057 -36.75 5.75
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@@ -2971,7 +2943,7 @@ solid Model
     outer loop
       vertex 23.6057 36.75 5.75
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+      vertex -0.05 36.75 15
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@@ -4465,6 +4437,34 @@ solid Model
       vertex 30.6788 40.4312 13.6097
     endloop
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+  facet normal 0 0.7071 0.7071
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+      vertex 4 -32.75 11
+      vertex 12 -36.75 15
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+      vertex 4 -32.75 11
+      vertex 0 -36.75 15
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+      vertex 12 36.75 15
+      vertex 0 36.75 15
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     outer loop
       vertex 41.1075 -40.4312 11.7709
@@ -4577,34 +4577,6 @@ solid Model
       vertex 37.302 39.175 15.8436
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@@ -4759,34 +4731,6 @@ solid Model
       vertex 35.6525 39.175 16.1344
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bridge_segment_parts.scad

@@ -11,6 +11,7 @@ module bridge_segment(explode=0, connectby="")
 	side_joiner_len = 2;
 	l = rail_length - 2 * printer_slop;
 	spacing = z_joiner_spacing;
+	wall_h = rail_height/2;
 
 	up(
 		(connectby=="fwd")? -rail_height/2 :
@@ -27,25 +28,26 @@ module bridge_segment(explode=0, connectby="")
 			difference() {
 				union() {
 					// Bottom.
-					up(rail_thick/2) yrot(90)
+					up(rail_thick/2) yrot(90) {
 						sparse_strut(h=spacing, l=l-1, thick=rail_thick, maxang=70, strut=7, max_bridge=500);
+					}
 
 					// Screw rack
 					ang = acos(1 - 2*lifter_tooth_depth/lifter_screw_diam);
 					teeth_h = sin(ang) * lifter_screw_diam + 6;
 					xspread(spacing) {
-						up(rail_height/2) {
+						up(wall_h/2) {
 							difference() {
 								union() {
 									if (wall_style == "crossbeams")
-										sparse_strut(h=rail_height, l=l-0.1, thick=2.0*lifter_tooth_depth, strut=platform_thick);
+										sparse_strut(h=wall_h, l=l-12.1, thick=2.0*lifter_tooth_depth, strut=platform_thick);
 									if (wall_style == "thinwall")
-										thinning_wall(h=rail_height, l=l-0.1, thick=2.0*lifter_tooth_depth, strut=platform_thick);
+										thinning_wall(h=wall_h, l=l-12.1, thick=2.0*lifter_tooth_depth, strut=platform_thick);
 									if (wall_style == "corrugated") {
-										corrugated_wall(h=rail_height, l=l-0.1, thick=2.0*lifter_tooth_depth, strut=platform_thick);
+										corrugated_wall(h=wall_h, l=l-12.1, thick=2.0*lifter_tooth_depth, strut=platform_thick);
 
 										// Side wiring access hole frame
-										down(rail_height/2-10/2-rail_thick) {
+										down(wall_h-10/2-rail_thick) {
 											yspread(motor_rail_length-2*28) {
 												cube(size=[platform_thick, 16+4, 10+4], center=true);
 											}
@@ -55,7 +57,7 @@ module bridge_segment(explode=0, connectby="")
 
 								// Side wiring access hole
 								if (wall_style != "crossbeams") {
-									down(rail_height/2-10/2-rail_thick) {
+									down(wall_h/2-10/2-rail_thick) {
 										yspread(motor_rail_length-2*28) {
 											cube(size=[10, 16, 10], center=true);
 										}
@@ -66,15 +68,33 @@ module bridge_segment(explode=0, connectby="")
 					}
 
 					// Side Supports
-					up(rail_height/2) {
-						yspread((l-2*5-5)/2, n=3) {
+					up(wall_h/2) {
+						yspread(l-2*5.5-5) {
 							difference() {
-								cube(size=[spacing, 4, rail_height], center=true);
-								down(rail_height/2-rail_thick-10/2) cube(size=[16, 11, 10], center=true);
+								cube(size=[spacing+joiner_width-0.1, 4, wall_h], center=true);
+								down(wall_h/2-rail_thick-10/2) cube(size=[16, 11, 10], center=true);
 							}
 						}
 					}
+					up(wall_h/2) {
+						difference() {
+							cube(size=[spacing-0.1, 4, wall_h], center=true);
+							down(wall_h/2-rail_thick-10/2) cube(size=[16, 11, 10], center=true);
+						}
+					}
 
+					// Bracing
+					up(rail_height/2-0.05) {
+						xspread(spacing) {
+							yflip_copy() {
+								back(l/2-10) {
+									front_half() {
+										trapezoid([2*lifter_tooth_depth, rail_height/2], [2*lifter_tooth_depth, 3], h=rail_height/4, center=false);
+									}
+								}
+							}
+						}
+					}
 				}
 
 				// Clear space for joiners.

docs/assembly/index.html

@@ -277,7 +277,7 @@ UL {
 <table><tr><td class="befor"><img src="final_assembly_8_before.png"></td><td class="arrow"><img src="arrow.png"></td><td class="after"><img src="final_assembly_8_after.png"></td></tr></table>
 </li>
 <li class="step"><h3>Step 9</h3>
-<div class="desc">Clip the glass build platform to the build platform supports using four binder clips.</div>
+<div class="desc">Lower the glass build platform into the support corner clips on the Y sled.  You should be able to carefully work the clips around the glass plate's corners.</div>
 <table><tr><td class="befor"><img src="final_assembly_9_before.png"></td><td class="arrow"><img src="arrow.png"></td><td class="after"><img src="final_assembly_9_after.png"></td></tr></table>
 </li>
 <li class="step"><h3>Step 10</h3>