Fully working spool rewinder, with integrated self reversing screw part. I will put .step file to download, check it out and if there are any questions feel free to contact me in PM. Winder is simple and logical, and there is no need for some special manuals:) It can work for bigger filament radius but gearing should differ.
ADDITIONAL MATERIAL (non printable)
1x rubber band
2x wood screw m2-m3 for pin cover (check exploded version!!)
P.S.
For spool mount I used Merlwynd Spool Drill Winder.
The author remixed this model.