Roller Ball Bearing Filament Spool Insert

This is a Customizable Filament Spool insert for use with Roller Ball Bearings.
This should be able to be used with any size roller ball bearing, as long as the roller bearing is smaller than the hole in the filament spool.

The idea is to use this with a threaded rod. I use nuts on one side and a spring clip on the other side to allow for quickly changing spools. The spacer allows the ball bearings to be separated from the nuts/spring clip attached to the threaded rod.

Numerous prints wer