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 de