Reduce print overhangs, line rubbing on screw head
Updated STL output
Add MCAD dependency
An experimental pulley system.

Inspired by:

http://3dprinterhell.blogspot.com/2013/06/a-better-filament-drive.html

I'll print this out once I get my spectra line and see how it goes.
Show Y bearings in the assembly
Have y ends anchor into sheets if possible
Updated preview image