updated working version!

insert.py

@@ -123,7 +123,7 @@ class ShelfInsert(Boxes):
 
     def ySlots(self):
         posy = -0.5 * self.thickness
-        for y in self.sy[:-1]:
+        for y in self.sy[:-1:]:
             posy += y + self.thickness + self.Overhang_left_overhang
             posx = 0
             for x in reversed(self.sx):
@@ -162,12 +162,9 @@ class ShelfInsert(Boxes):
 
         # floor
         self.rectangularWall(x, y, "eeee", callback=[self.xSlots, self.ySlots], move="up", label="top")
-
         
         # Inner walls
-
         be = "f" if b != "e" else "e"
-
             
         ######
         for i in range(len(self.sy) - 1):
@@ -175,14 +172,14 @@ class ShelfInsert(Boxes):
             self.rectangularWall(x, h, e, move="up", label="x support")
                             
         for i in range(len(self.sx) - 1):
-            e = [edges.SlottedEdge(self, self.sy, be, slots=0.5 * h),
-                 "f", "e", "f"]
+            e = [edges.SlottedEdge(self, self.sy, "e", slots=0.5 * h),
+                 "f", "f", "f"]
             self.rectangularWall(y, h, e, move="up", label="y support")
 
         
         
 b = ShelfInsert()
-b.parseArgs(['--sx=140*3', '--sy=140*2', '--h=26', '--Overhang_front_overhang=50', '--reference=0', '--debug=0'])
+b.parseArgs(['--sx=140*2', '--sy=90*3', '--h=26', '--Overhang_front_overhang=50', '--reference=0', '--debug=0'])
 b.open()
 b.render()
 data = b.close()