Just a simple tool to rewind filament with the help of an electric drill and any spool holder.
I'm using a sponge to guide the filament.

The thread can be a little tricky to print but it should have more than enough clearance to also work if it doesn't turn out great.

For very hygroscopic filaments, make sure to re-spool it twice. Otherwise, prolonged storage might turn it into filament confetti. (Nylon, PC, …)

max. width: 100mm
max. inner diameter: 75mm