Aluminum 2020 top filament spool holder

This is a single/double top mount spool holder for an aluminum 2020 Prusa 3D printer.

It uses a 5/16" threaded rod. I included 2 cones. One for a 608 bearing, and one for a 6200 bearing. The 6200 bearing requires the reducer to fit the 5/16 threaded rod. I made all the holes a bit under sized so they can be drilled out to the correct size for a better fit.
The shims are meant to stabilize the arms, and not lock them in place. You'll be able to move the arms side to side to line them up as y