Here's a karambit I designed.

It fits nicely in the hand and is very satisfying to spin.

TIPS

Separate the template into 2, print flat and then stick them together.

For the handle, cut off the top part too, and print in a different colour.

For the grip pattern of the handle, specify 0 top layers for the top part and then have fun by choosing an infill pattern that you like and an infill ratio not too high, to see the pattern clearly.

Filament i used : magicPLA from 3DJake

A user designed a support to display your karambit, don't hesitate to go see his work :
[https://makerworld.com/fr/models/2579688-tactical-karambit-holder#profileId-2845163](https://makerworld.com/fr/models/2579688-tactical-karambit-holder#profileId-2845163)