Spool Holder using Bearings for Printrbot Simple Metal - BuMat Spools

A Spool holder for Printrbot Simple metal, to use with Bumat spools
( ~92mm exterior width )

Intended to use with
4 x 608z bearings,
4 x 5/16" x 1" ( 8mm x 25 - 30mm ) Bolts,
4x matching nuts,

No washers required (spacing from the main body of the spool holder is built into the design)

I made this version with bearings because I got tired of switching out spacers and an axle whenever I wanted to change filament, this lets you just place the spool on top without having to sw