Yarn holder with magnetic mechanism, spins smoothly.

16cm room for the yarn (bigger yarn you can squeeze)

Hight: 22cm

Bottom diameter: 18cm

You need 8x3mm disc magnet, and 8mm diameter magnet ball or ball made of magnetic metal 

Bambu store's steel ball won't work, it's not magnetic enough!

It took me few tries to get the magnetic ball in correct position so the bottom part hangs straight (not an issue if you use metal ball without magnetism).

You have to press tightly the disc magnet and the ball on their place, use glue if you want, I didn't.

I used Bambu PLA Matte Ivory White and Polylite PETG Black

Cheers!