End Caps for MMU mini spool MK8.2

thingiverse

This is a part you might need if you build "MMU mini spool MK8.2 by Shmilcat", and you are reusing the parts from the original Prusa MMU2S buffer (the first version with the black trays, not the later one with the flat sheets) If that is what you are working from, you won't have any parts to hold the ends of the shafts in place in the bearings. The later buffer came with parts that were reused in Shmilcat's design. (the yellow tabs in their pictures) You'll need 4 of these per spool holder. Do a test first, if the fit is too tight or too loose, you can scale X and Y a few percent with the slicer to make it pressure fit. If you print the part pointing up, the visible end will look smoother but it might be weak along the Z axis and snap off easily in the tube. If you print the part pointing sideways, it will be stronger, but you'll need supports and the result might look rougher.