Universal Ender 3 filament spool holder with 100% 3D printed ball bearing.
It works for filament spool of different widths and center diameters, the minimum center diameter is 28.5mm
Important info about the bearing: I made two versions of the bearing the 3A is identical to the original "rohingosling" version, and the 3B is a remix with axes on every bearing ball, you need to apply some force to free the bearing parts, but ones the components are free it works great, its very important to use some silicone lubricant, I use a generic mold release dry silicon spray
EDIT: I added 2 new parts "1 Long" and "5 Long" I think it will work for wider spool filament rolls up to 100mm wide
EDIT 2: I just added two new axes for the new models of Ender 3 that do not use "bolts":
"1 (new ender)" and "1 (new ender)_Long" files