Spool Spacer for M3D

This is a spacer for http://www.thingiverse.com/thing:705345. Print 2 and put one in either side of the spool. It acts as a bushing and gains a little more clearance between the spool and printer. It also prevents the spool from cocking to one side or another.

Over all it just makes it easier on the extruder and satisfies OCD.