It's been my dream for a while now to make a prosthetic hand that is highly adaptable and yet mechanically sound. I've been using Fusion 360 for this task and below is an embedded link to a very basic test.

With these sorts of parametric systems it is very easy to get lost or put parameters in the wrong places. Hence I am ensuring that certain basic elements work before I start to get fancy with nice organic designs.

You can download a version that you can play with at

A reminder that I am still running a gofundme campaign for Hollies Hand. The above work I am doing is also connected to my prosthetics work. By having such a flexible hand design system I can make a hand that fits a scanned hand as opposed to fitting the mechanics to each individual hand manually (or more manually anyway).

Here is Hollies hand fundraising page.

If you can't donate then please share with your friends.