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Heavier counterweight arm for Auto-rewind spool holder (for MMU)

Heavier counterweight arm for Auto-rewind spool holder (for MMU)

thingiverse

I found the original design struggled with some full filament reels (esp Prusament for some reason), and I don't think the mmu will mind a little extra pull back force, so I added space for 1 or 2 extra bearings as counterweight (for a total of up to 3). They are inline with the center of gravity and the pivot so as not to throw off the delicate balance this design's gearing requires.

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