Friction Reducer

I love these spool holders, but I needed 5 ramps so the fiber spools didn't drop into the natural gap between the rod and the next rod or hook. I also later discovered that the fiber spools have a lot of natural drag so I made this simple sleeve to cut down on the friction. Mine were sliced for a 0.6 nozzle, but many here have already noted that the 0.4 can print them without issues (but I have not tested this myself).