This mechanical finger can be a lot of fun to play with, but can possibly serve as prosthetic for someone with missing a thumb or other fingers. Additional parts needed: a basic flexible "BIC" pen insert. Four (4) M3 x 10mm screws with washers. Other small screws may be substituted.

Print Settings
Printer brand:
Creality

Printer:
ender 3 v2 neo

Rafts:
Yes
Supports:
Yes
Resolution:
0.02
Infill:
25%
Notes:
Support is a must. I have positioned models at an angle that has worked well for me.

I recommend 3 shells for wall thickness.

Post-Printing
Some clean up will be needed, depending on the type of support used.