Summary

Yarn unwinding tool

requires a 608bearing
And a handful of 4.5 metal bbs. I used maybe 500ish.

I used 15% infill, and stopped the print just before the top of the base was printed into place to add bbs into the infill spaces to add weight to the base of part 1.

Put part 2 into the bearing, and then put the bearing into part one. Add super glue if needed.
It worked as just a press in fit at first, but after about two months it wiggled free and I had to add some glue. Works great again now though.

I used the Dangineering 608 bearing linked below, but it required some fiddling to make it work with my kobra 2 neo.

Dangineering bearrings