Filament Winder

This setup was built to wind from a 4.5kg spool to a 1kg spool.
It is very slow (~0.5h for 1kg) but it works and does not need babysitting.

The idler makes for a even winding pattern and the limit of 600 revolutions fills the spool to just about the right amount, so it will still fit in my AMS unit.

^{Yes I build it differently than I constructed it in CAD :P}
The code and the STEP file are included here if anyone wants to build one.