Pfierce Dual PNEMAtruder 1.0

I've been working on this http://www.thingiverse.com/thing:5264 for a long time and with MBI's recent support of selling the high torque NEMA 17 motors, we can now use some of the heritage designs to create a direct drive, dual stepper extruder.

The original design concept comes from the awesome Printruder II, by Zaggo: http://www.thingiverse.com/thing:1980

With a dual extruder design, it opens up the possibilities of printing in two colors or two different materials, such as ABS for the main structure of the print and PVA for water soluble support material.

The offset between nozzles is 35mm.