Prusa MK3 - Smooth Roller Bearing for Filament Holder (w/ TPU Grip Ring)
thingiverse
These are bearings to smooth out and reduce friction for the stock Prusa spool holder shipped with the MK3 printers. It's based on the 608 bearing design by DrMcWoofies ([here](https://www.thingiverse.com/thing:4628063), but I resized it to fit the spool, and added an optional TPU ring, which can be used to add grip to the outer surface. Print the bearings with PETG or other wear-resistant material, and then the optional outer rings with TPU. After printing, pack with grease (I used a non-sharp needle and syringe from Amazon, plus the grease Prusa shipped... but any grease will do), and enjoy! Here are some clips of how well it works: [Clip1](https://i.imgur.com/MHgooPV.gifv) [Clip2](https://i.imgur.com/f4b60dk.gifv)
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