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 m