The ideal size power drill spool rewinder for Bambu spool size and similar size spools. 
With a clamp that loosely fits on the end so you can hold it steady with the other hand while rewinding.
Improved Version 2.0 file that increases strength and rounded edges.  

Uses minimal filament because it's only for those sizes that will fit into a Bambu AMS.
*Screws in counter clockwise  - this way when holding it with the right hand, with filament on top, it will be less likely to loosen up.

Works with standard hex-shaped screwdriver bits.

if you're a lefty, have filament wind from the bottom, or reverse the model in Z or X in a modeling app.

I added a clamp to go on the end to make it easier to hold with two hands for rewinding.

Be sure to use the v2 .3mf if you can, as it's set up to add more infill on the top screw section.

 PLA will work,  but probably better with PETG.