joeaverage.

Casein is useful in bulk mouldings, but in thin sections, ie 1mm and less its lack of stiffness becomes an issue.

Hi Pete,
It was coming across the original work done at the Max Plank Institute that led me to Digory, the commercial outcome of that work. I contacted them to find out if they produced anything as thin as 1mm sheets, my prime requirement, but the answer was no. (Slab sawing blocks into sheets is an economical no-no.)
This led me to some earlier work, that in turn prompted me to have a go myself. I've got as far as producing a cheap form of calcium phosphate that's ivory coloured, and will soon take the final step of converting that into a solid.