Most of the frame up to the Y sleds is done

assembly.scad

@@ -0,0 +1,82 @@
+use_colors = true;
+
+xsize = 500;
+ysize = 400;
+sled_size = 6 * 25.4;
+
+cur_xpos = 100;
+cur_ypos = 200;
+
+include <parts.scad>;
+
+
+csize = 15;
+
+module frame() {
+  translate([corner_offset, 0, 0])
+    rotate([0, 90, 0])
+    tslot(xsize - 2 * corner_offset);
+
+  translate([0, corner_offset, 0])
+    rotate([-90, 0, 0])
+    tslot(ysize - 2*corner_offset);
+
+  translate([corner_offset, ysize, 0])
+    rotate([0, 90, 0])
+    tslot(xsize - 2*corner_offset);
+
+  translate([xsize, corner_offset, 0])
+    rotate([-90, 0, 0])
+    tslot(ysize - 2*corner_offset);
+}
+module corners() {
+  render() {
+    translate([0,0]) flcorner();
+    translate([xsize, 0, 0]) frcorner();
+    translate([xsize, ysize, 0]) brcorner();
+    translate([0, ysize, 0]) blcorner();
+  }
+}
+
+module rails() {
+  frame_offset = frame_size / 2 + corner_size / 2;
+  colorize(stock_color)
+  {
+    for (xpos = [frame_offset, xsize - frame_offset]) {
+      translate([xpos,
+		 frame_size / 2 + wall_thickness])
+	rotate([-90, 0, 0])
+	cylinder(d = rail_diam, h = ysize - corner_offset * 2);
+    }
+  }
+}
+
+module ysled_rails() {
+  frame_offset = frame_size + corner_size / 2;
+  yoff = (sled_size + ysled_extralen * 2 - frame_size) / 2;
+  colorize(stock_color)
+  for (ypos = [-yoff, yoff])
+    translate([frame_size / 2, ypos, 0])
+      rotate([0, 90, 0])
+      cylinder(d = rail_diam, h = xsize - frame_size * 2 - corner_size);
+}
+
+
+
+union() {
+  frame();
+  rails();
+  corners();
+}
+
+translate([frame_size / 2 + corner_size / 2, cur_ypos, 0]) {
+  ysled(associated_parts = true);
+  translate([xsize - frame_size - corner_size, 0, 0])
+    rotate([0, 180, 0]) 
+    ysled(associated_parts = true);
+  ysled_rails();
+}
+
+  //translate([0, 0, -1000]) cube(2000, center=true);
+
+