Filament Spool Holder
Description
I stumbled upon this really cool [ball bearing design](https://www.thingiverse.com/thing:2098928) based on airsoft BBs and wanted to make something useful out of it. I also needed to replace the spool holder system hanging on the frame of my printer with something to avoid vibrations while printing, so... Here we are, a spool holder with BBs ball bearings :) Works only with standard 1Kg filament spools.
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