Knife handles

This is a knife handle for homebuilt knives.
I made it as I am a scout and we are currently building knife handles from scratch.
The Urban puukko model didnt fit, so I designed this instead.
Pictures will come along later
I have included the .stl along with a model with supports from meshmixer.
the knife handle is scalable to fit different hand sizes. recommended sizes are width: 2-2.5 cm, height: 2.5-3.5, length: 11.5-13.5.

The handle should be scaled ununiformly for better results, as