A simple filament spool holder

This is a very simple filament spool holder I draw it for my CR-6 SE printer but it can be fitted on any printer with the same type of 20mm wide profiles. It needs a support (preferably an arborescent support in Cura) to be printed on the back face. You'll need 2 skate ball bearing 22x7x8 mm.

I made a second version able to keep 3kg spools.