Universal Filament Holder

This is a remix of the Universal filament holder from DavidAmigo5 and the Ender 3 Filament Roller Guide from Holspeed.

I replaced the mating shafts that support the 608ZZ bearings in the original design with through holes for M4 x 20 bolts. I press fit guide rings on the outside of each bearing. The guide rings will keep the spool tracking in the center of the groove rather than sliding across the surface of the bearing and rubbing against the bearing holder and cap. The small rings worked for me but I've also included large rings in case you need them. I inserted a spacer into each side of each bearing. Then a M4 x 20 bolt is passed from the countersink side of the holder, through the spacers on the bearing and through the cap. An M4 nut is screwed onto the exposed end of the bolt. When the nut is tightened it will squeeze the cap, spacers, and holder together on the inside of the bearing holding it in place while the outside of the bearing turns freely.

You will need