Easy Filament Spool Roller V2

On YouTube:
https://www.youtube.com/watch?v=nYS_AR4cvTw

This is the second version of my easy filament roller. It has much deeper grooves to solve the problem where the spool could fall off if pulled at an angle rather than straight forward.

I recommend putting rubber feet or something similar on the bottom so it doesn't slide around on your desk.

I got the idea to make a roller with no moving parts after seeing a typical roller that had too much friction to spin at times, but still wo