Extra goodies for Hypercube

Extra goodies that I used for my Printrbot to Hypercube conversion as mentioned in my youtube video. https://www.youtube.com/watch?v=g5yfxfhEjJ0 and https://www.youtube.com/watch?v=T5Xv6H_RaeI

Due to build platform size a narrower nut holder is needed for Printrbot to Hypercube conversion.

Clip with hole is used for mounting power connector for the Printrboard

Also see spool spinner
http://www.thingiverse.com/thing:763118

Original designs:
noise damping feet http://www.thingiverse.com/thing:1543152
spool mount http://www.thingiverse.com/thing:2024867