Sisyphus Auto-Rewind Spool Holder (MM)

Filament load/unload issues? MMU2 taking too much space? Not with this Sisyphus Auto-Rewind spool holder! It keeps filament on the spool during unloading, up to almost three revolutions.

Use two curved nuts to attach the spool to the roller. Put roller on stand. Insert filament in extruder/MMU2. That's all!

A filament tube can be installed from extruder/MMU2 to the frame in two ways: above (using tube holder) or below the spool.

The slope of the track can be adjusted by placing objects under the frame and/or by screwing two M3 bolts in the designated holes in the frames. This has a direct influence on the rewinding torque.

This is the multi-material version. The single-material version can be downloaded from https://www.prusaprinters.org/prints/4359-sisyphus-auto-rewind-spool-holder-single-material

Video: https://youtu.be/8nZiOu8y_jY

STL and STEP files are on Thingiverse: https://www.thingiverse.com/thing:3739793

Print instructions

First color: Prusament Mystic Green
Second color: Colorfabb Intense Green
Third color: White

Extruder temperature is set to 200°; after pre-heating you can adjust it to your specific printer's operating temperature if needed.