This is my first 3D project in this community. It was inspired by a keychain I saw a few years ago.
It's a keychain that can be used as a knuckle duster. You can scale it up to better fit your fingers.
Hope you like it!

Tested on Bambulab A1Mini. Nozzle: 0.4. Filament: Bambu PLA Matte.

This version has sharp edges. If you prefer, I made a version with soft edges: [https://makerworld.com/en/models/910431#profileId-871189](https://makerworld.com/en/models/910431#profileId-871189)
 

Disclaimer: This design is intended for novelty/display purposes only. I do not endorse or encourage its use as a weapon. Please be responsible and aware of your local laws regarding such items.