Filament Spool Rewinder Improvements (v2)

Note: Many have asked about assembly instructions.  They can be found in the original of which this model is a remix. The original is at: https://www.printables.com/model/407688-bambu-lab-p1-x1-x1c-x1cc-filament-spool-switcher-w (Update #2: added missing shafts/spacers 3mf plate/file, from original remix model. See below update…)(Update #3 12/4/2024: added plate with shafts/spacers from original remix.)(Update #4 2/2/25: Added more description/pictures about end of axle away from gears and