Another one of my designs I have been using it for ages. I was trying to design this plastic one the same as the wooden one I found in my grandma's house. The best part is that the shell is not flying around when you crack it. There are two designs: small for nuts and big for walnuts&nuts. But lately, I am using only the big one.
Thank you, grandma, for a beautiful design.
Here are public Fusion360 links if you would like to change some of the dimensions
Small one: https://a360.co/2PhPuXs
Enyoj and have fun!
The base needs only 20% infill because the entire shell is made of small cylinders which significantly improve the strength of the material.
The handle must be printed vertically.