Roller for Spool Holder

V1: Fits on the P1X's metal spool holder. Reduces friction. Requires 2 16mm OD, 5mm ID by 5mm thick bearings. Made of three parts that can be printed without supports. Snaps together, no glue needed. Minimum inner spool diameter is 50mm. You will have to trim back the lower part of the original metal holder for spool diameters smaller than 55mm to fit onto the spool holder. V2: Some adjustments to dimensions for tighter fit. V3: Added a filament guide to avoid soft materials (TPU) to jump the sp