Cell phone stand with worm gear.
You need one screw M4x50mm fpr the knob and one screw M4x25mm for the crown with relative nuts (braked is better).
Print Settings
Rafts:
Doesn’t Matter
Supports:
No
Resolution:
0.2
Infill:
15%
Filament: GEEETECH PLA Blue, orange, red, yellow, green
Credits:
Il_Batte