Prusa i3 MK3S Spool Holder Bearings

youmagine

I've designed two bearings that can be slid onto the stock i3 MK3S spool holder, as this design isn't working very well. The bearings are specifically for ColorFabb 750 gram spools and also for the spools shipped by Prusa with their printers (which I believe are all 750 gram silver PLA spools). The tolerances on the bearings are pretty tight (+/-0.15mm), so make sure that your printer can handle these prints. Mine were printed in Dutch Orange PLA from ColorFabb using the stock PLA/PHA profile in PrusaSlicer at a layer height of 0.2mm, and I didn't have any problems. You probably need to "loosen" the rollers a bit after printing, which can be done by trying to gently pry them apart. Once every roller is free, you can feel the bearing spinning freely. If you'd like to support me for the designs I publish for free, please consider using my AliExpress Affiliate Link (https://bit.ly/2XYWpHW) when buying something from AliExpress. It won't cost you anything extra, but it will really help me out a lot!