Simple adjustable 608ZZ filament spool holder for 2020 extrusion

This is just a couple of bearing mounts rejiggered to fit 608ZZ (specifically 8x22x7) bearings to go with the mount by watamin [here](https://www.thingiverse.com/thing:2612491). I made this just to use bearings I already had lying around.

One of the models is pretty much the same as the original mount bit, just widened to fit the wider bearing.

Since I didn't have any M6/7 bolts handy, but piles of M3, the second has a spindle to match the bearing with an M3 sized hole through it. Needs a