upgrade graber i3/ prusa

thingiverse

I added new and edited files, including cars to use with the tr8 timing system.\nThe STLs in this post are composed of edits made on top of existing models here at Thingiverse, with some improvements that met my needs. I upgraded the models for the Graber I3/Prusa, X-Motor, X-End, X Carriage (with integrated MK8 extruder support), and Endstop X, Y, Z.\nThere are two car models, one for use with a M5 threaded rod and a threaded nut, and another for a M6 threaded rod and a threaded nut.\nAttention=\nThe X-end is closed at the bottom, the 8mm rod needs to be 385mm long to fit properly in place, or if you can't cut the rod you'll need to drill a hole in the X-end.\nThe original STL links are http://www.thingiverse.com/thing:119616 and http://www.thingiverse.com/thing:1037870