Roller Filament Spool Holder

This filament spool holder uses standard 22 x 8 x 7mm skate bearings and 5/16" x 1" hex bolts with a nylon lock nuts (prevailing torque nut) found at your local hardware store. Bearing spacers are designed into the frame. Made for MakerBot 8" spools (8" x 2 7/8").