This is a minimal design low friction spool roller. I designed it to fit inside the original p1p spool holder. It was inspired by this model, but that model was too large for many of my spools other than Sunlu, it did not fit Inland cardboard or plastic spools.

I primarily designed this for TPU spools because the soft filament requires the spool to roll very frictionless or else the extruder can deform the filament and jam.

This also includes a modified version of this model, with a recess of the holes on both sides, which allows the spacer to be used with the spool holder upside down.

To install: Turn the original spool holder over and mount it upside down. There is a spacer included if you have an arc enclosure where the back panel prohibits the spool holder from fitting. You then simply drop in the base and put the roller with 2 - 608 bearings on it into the base. You should press down on the bearings themselves to seat them in the base so you don't snap/deform the roller.