Filament Spool Recycler
thingiverse
As you probably guessed, you have to cut the empty filament spool in half and fix it with this tool. https://youtu.be/KMKtIAxz9kI
Download Model from thingiverse
With this file you will be able to print Filament Spool Recycler 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 Filament Spool Recycler .