Alu reprap

This is partly a derivative of http://www.thingiverse.com/thing:14208 (which is a variant of the printrbot). I recommend the printrbot variant on Thingiverse (the link above), as it's a nice and compact design. The files required from the above design are slightly modified and are provided here http://www.thingiverse.com/thing:15634 (separately due to GPL licensing of the original parts). The x-carriage can be used straight from the original design, but change the rod size to 8mm.

On this design, the smooth rod has been changed to be on the outside, and the frame uses an aluminium sheet instead of rods. I'm still calling it a reprap, as it relies on lots of printed parts to be operational.

The z-belt has been replaced by a printed rack, which partly based on http://www.thingiverse.com/thing:11642 and inspired by http://www.thingiverse.com/thing:6011 and http://www.thingiverse.com/thing:14537. The x-axis still uses a belt, and a printed pulley. I doubt the Y-axis rack is better