https://www.precisiontargetpistolgri...Reproduce.html
This person will 3D scan your grips and make a 3D printed copy using wood/PLA composite. They even claim they can modify the scan to another model gun so you could, for instance, have a set of Rogers grips you love for your Python, duplicated for your K-frame.
I think a great project would be to make a catalog of 3D scans of the great vintage grips of yore. Then you could select your gun and input your grip measurements and have something ALMOST like guys used to get custom made back in the day.