This is a quick test I did using my 3D printer
Model: https://www.turbosquid.com/3d-model.....-model-1991837

Not exactly anatomically correct, it's missing a few things and I had to change it a little bit for 3D printing
But it's pretty close.

I'd like to try again with a more realistic skull and give the jaw more freedom, right now it only has one axis, meaning the lower jaw cannot separate from side to side.

Still, quite a learning experience, I don't know if I'll throw it away or just offer it as a gift yet.