RepRap G3D (Prusa i3 variation) Leadscrew Z-axis w/Delrin Nut

This is a (WIP) modification to the RepRap G3D's Z axis meant to replace m5 screws with leadscrews in order to improve accuracy and precision.

I'll provide openscad files as soon as I finish and test the pieces.

I'm using nema17 motors directly coupled to tr8*8 acme leadscrews. If you want to use the exact same parts, these are the ones I ordered: http://www.robotdigg.com/product/31/NEMA17-Threaded-Rod,-350mm-length-Tr8*8-Acme-Leadscrew

Based on [Trilitheum](http://www.thingiverse.com/