Hi there,
I think I can help you with your 3D model. I have done a lot of design for 3D parts and know what to take into account.
If you have some sketches, I can make a skecth model for you to look at (for free). And after that you can decide if you want to hire me.
I can start right away.
If this sound good to you, let me know.
Best regards,
Jouni