Prolong the life of your extruder motor by reducing the friction on your filament spool. Maker World has loads of spool holders with bearings, but I modeled this one to use the large 6004 type bearing that can be easily 3D printed. This spool and holder work with the standard spool holder screw locations on the Bambu Labs P1S and P1P printers (maybe works for X1 too?). But it's truly a universal design that fits standard filament spools (1kg down to 250g) that any printer can adapt and use.

Print two 6004 bearings from https://makerworld.com/en/models/219027#profileId-244750 by @endHDesign, and attach them to this model's spool.

Enjoy!