ultimate filament spool.

myminifactory

This custom spool for filament must be printed exactly as I designed it, and when it emerges from the printer, all you need to do is secure the cylinder in the half-hole with a dab of glue, then attach the other bearing in the same way. This clever design will allow you to place the spool directly onto the rack and feed the filament into your printer without ever having to remove the rack due to the bearings' convenient placement.