1 Kilo spool
thingiverse
If you purchase filament that needs a spool, or you have a tangled spool this is a great way to fix it without having to roll out all 338 meters of filament. This does need 3 m4*9mm screws.
Download Model from thingiverse
With this file you will be able to print 1 Kilo spool with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on 1 Kilo spool.