Simple and easy to swap spool holder.

Mounts on 3030 extrusion using four M6x12 screws and M6 T-nuts.

PVC (or PP) pipe provides pretty smooth rotation. Pipe is 25 mm diameter. You can use pipe of any length to fit your needs. I use 140 mm long pipe to fit big 2.5 kg spools.

Please tell me if you need any modifications (2020 extrusion, another pipe diameter, etc).

Printing

You need two parts: one original and one mirrored