Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:3453075.

Got fed up with the plastic-on-plastic rollers in the external fillament caddie squeaking after a while so I threw out the stock rollers and printed some new ones and a couple of expansion style plugs to mount the bearings in the existing injection molded parts.

Used 608 bearings i think, because thats what was closest, but the idea can probably be adapted to fit what bearigns you may have. Spools roll much easier and with less noise after this mod.

Almost contemplated adding a motor to provide assistance and use a longer teflon tube, but saving some fun for another day.