Bearing Spool Holder

This is a filament spool holder where the spool rests on the bearings for a low-friction spin. For at least one of my spools it's too little friction, so I spin it around so the spool rests on the plastic and not the bearings.

It's inspired by a couple of recent finds, but those didn't have the mounting that I needed, and I already have an M8 rod mounted so I can use that for strength and for holding the bearings.

It can be customized; the STL as published will fit spools up to 70mm wide