Spool Holder for 10lb, 5lB, 2lb and 0.5lb spools using skateboard bearings as a "lazy susan"

I have been trying to think of an easy way to keep the 3D printer fed without using motors and to also not have tangles. This method keeps tension off of the printer head and does not tangle the filament.

Using skateboard bearings was the key since they spin very nice with a heavy spool on them. There's two pieces to this design, the base "table side" and the "spool side" holder. It uses any standard skateboard bearing which is tapped into the spool holder. I printed the spool holder with