This is a remix of https://makerworld.com/en/models/118580?from=search#profileId-127612.

Like a few others, I had a problem with the posts for the brackets being too small for the holes in the Besta or breaking off when the weight of the spools was added. It seems like there may be minor differences in hole sizes between Besta units.

This version has slightly thicker and longer posts if you need them for a secure, snug fit.