Printrbot Simple Metal Filament Spool Holder

I couldn't find a Filament Holder I liked, so I designed this one:
-Keeps your workplace neat since it mounts on top of the Printrbot.
-Handles spools between 55mm-90mm wide (or wider if you buy a longer bolt).
-With the -skateboard bearings, and feeding from the bottom, the filament unwinds good, and you can leave it printing with minimum worries of it falling or jamming.

Designed with Autoscad (took me a while to perfect), I hope you enjoy it!