FLSUN Spool Roller

thingiverse

I wanted a minimalistic approach to decrease the friction between spool and holder, one that wouldn't care the diameter of the spools since I have various sizes. This uses ten 0.25" airsoft pellets as bearings that snap into place in the track I designed for them. The part is designed to fit snugly on top of the stock filament holder on my FLSUN QQ-S Pro, I'm not sure if they've used the same filament holder on other models. Print with the spool end-stop on the bed to avoid using supports ;-)