Thingiverse

Auto-rewind spool holder (for MMU)

by MartinHoffmann

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This is an auto-rewind spool holder that automatically rewinds the spool on filament changes. It replaces the filament buffer completely!
When the filament is dragged into the printer, a weight is lifted. When MMU unloads the filament, gravity does the job to rewind the spool.
Check the [video on youtube](https://www.youtube.com/watch?v=TmQAFTuMKQI) to see the rewind process or [this video on youtube](https://www.youtube.com/watch?v=6MSmuZER7Ww) that shows the "clicking" when the arm is on top

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Thingiverse

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