Tinkeriffic BB Bearing 60mm Spool Spindle

Another Tinkeriffic Spool Bearing. I know, right?

This one is designed to fit a 60mm spool.

I designed it to go with this spool of PLA, which appears to have a bore that's just wider than 60mm. There are a couple of STL's in the archive, one that's 60mm and one for the in-real-life spool I have.

This three-part solution (thirteen parts, if one counts the 4.5mm BB's) is designed to use a Tinkertoy rod as an axle and is a much, much smoother ride for your filament spools.

I found inserting BB's into the original 608 bearing to be frustrating so I split the bearing in two and left it to the end user to super glue the parts together.

The walls of the inner spool are by necessity quite thin; I recommend multiple shells or high infill for that part.