Ender3_Spool_Roller_Tube

thingiverse

A supplemental part to this spool holder: https://www.thingiverse.com/thing:3646853 I found that my filament spools have protrusions and bumps that cause snags when those protrusions go over the bearings. This tube goes over the spool holder, and around the bearings, so that those protrusions don't catch on the bearings. This is stupidly simple, but I hope it helps someone.