Bearing Spool Holder with Adjustable Platform

The spool holders that use bearings seem the most robust of all spool holders to me, but I've grown tired of knocking them over accidentally when I change filament. This platform helps keep them stable. It is adjustable to most common spool sizes for 1.75mm filament.

You may not need the 3/8" #4 wood screws that keep the bearing holders together, because the bearings should fit quite snugly. You will need 4 common skate wheel bearings for each spool holder set. You may be able to print your own:

https://www.thingiverse.com/thing:3002837

I normally print all parts at .12-.18mm. Smaller parts should be printed at highest quality (.1-.12mm). Supports should only be needed for the two inner spacer shelves of the platform.

The following quantities are needed for a single spool holder set:

Bearing_Holder_half - 4
platform - 1
support - 2
small nut and bolt - 2