Almost ready for 3D printing, here is the fully rigid version for my own left hand as it currently stands:
The added slot is for a strap to go around the webbing of the thumb, and I feel everything is a bit smoother and more uniform than before. These are currently still quite rough in measurements because of my using a fabric measure and then needing to convert to metric and round a bit. I’ll post a picture with it on when I have the first prototype complete.
LA From Scratch 