Vành Con Lăn Giúp Dây Filament Siêu Mịn

My dry box, made from a TidyCat litter tub, has an outlet very close to the filament spool. That puts a lot of sideways pressure on the spool when the coiled filament is at the edge. That has caused me problems with multiple versions of filament rollers - but the rims on these are so far keeping everything on track, preventing jams in the box, and reducing the number of times my printer winds up printing air for hours.

Printing it standing on end will produce the best-looking version, but takes a lot of support structure for the top rim. Printing it lying down like a set of barbells on a plate saves about 20% filament and time, but leaves the rims slightly ugly. They still work, though.