Spring & Bolt retainer MMU
Description
Every time I flip open the MMU to work/clean, the bolt falls out, the spring rolls away, and I spend half an hour on the floor with a flashlight. No more. Add these to your bolts, probably tighten the bolts a half turn less, profit. For other Prusa MMU stuff: https://www.thingiverse.com/AbeFM/collections/abes-mmu2-stuff
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