If you print this please take your time to take a picture of your printed part and post a "make". thanks :)

Updated version of the spool holder, the old one did often fall off the tracks when the spools was nearly empty. this one is better, also more rigid and better looking.

Filament spool holder for 250mm spools (10")
may also be usable on different spools.
uses m5 screws and 19mm bearings, different bearings may also work as long as they have 5mm holes.