This is a front cube frame for the Wanhao Duplicator i3. I uses square cross section aluminium profiles.

It includes ideas from the otherwise excellent Z-Braces mod (http://www.thingiverse.com/thing:921948).

BOM:

• 8mm threaded rod
• 4 8mm nuts
• 20mm x 20mm Aluminium extrusion profile cut in (+- 1mm):
  • 4 x 154mm bars (horizontal/bottom)
  • 2 x 331mm bars (vertical)
  • 1 x 365mm bar (horizontal/top)
• 22 M3 nuts (length > 10mm). The original ones are too short (length = 6mm or 8mm).

UPDATE 1: modified top_left and top_right plates, to allow more room for the 8mm nut. Added length of bars in summary.

Wanhao Duplicator i3

No

No

2

75%

No supports needed.

Expect some plates to break when hammering them to the aluminium profile... If you do it gently, you can maybe lower the needed infill. YMMV

Step 1:
Cut the aluminium extrusion (20mm x 20mm) to length. Mount the tubes with the connecting joints and plates (first bottom then top).

Step 2:
Screw the bottom left (or right) hand side to the Wanhao frame (see photo). Carefully clamp the original frame!! Repeat with right (or left) hand side.

Step 3:
Install upper part of the frame.

Step 4:
Cut the threaded rod to length and screw it to both sides. Use a carpenters square.