MK4 Spool Holder

prusaprinters

A low friction spool holder for the MK4 for use any filament or spool material. Helps eliminate rubbing on cardboard spools and reduces drag for printing TPU.I remixed this from multiple models to provide connection strength, additional length on the holder without the need to adjust bearings, and to tweak the design in order to be able to print it more cleanly.I printed this in PETG, vertically as shown in the pcitures with organic supports running up to the top bearing surface (which is hidden by the bearing when assembled). No other supports required so the final print is very clean looking. I also split the roller from HugoG in half using PrusaSlicer so I could print it vertically using the auto generated dowel to connect the two halves.Requires two M3x16mm button head cap screws and two 608 bearings (I got both from Amazon).The cap screws do not bottom out in the holes. The holes are designed with extra depth to allow for adjustment on your particular spool arm. Min are set to 5.5mm from the plastic to the underside of the cap head.