Prusa i3 Rework

The Prusa i3 Rework evolve, you will find this new revision 1.5 here.

This version of the Prusa Mendel iteration 3 rev 1.0 is based on the EiNSTeiN VARIANT (M10 threaded rods instead of M8).
Changelog:
04/11/2013 : 1.75mm extruder version added
We changed some features :

• Extruder upgrade :support J-Head
• New cooling fan duct for J-Head
• Y Idler with a tensioner system.
• X End Idler with endstop holder.
• Upgrade X End Idler in order to support 624 bearing.
• Y Motor with endstop holder.
• Addition of Z Endstop Holder in situ.
  Enjoy !