Fidget Box Opener

Like the original model, just make a ring on the inside to make it spin.

Print setting :

0.2 layer height
3/4  perimeters
15% or more infill if u want it solid
gyroid infill
random z-seam

Print in place.

2 versions available (one with small and one with bigger ring)
 

The tolerance of the ring is tight fit so be sure to have a good calibrate extrusion.
If it stuck just gently move the ring up and down to make it loose.

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