Due to an injury when I step on a nail in the old past, now the bone on one side of my heel hurts badly when I walk. I am thinking about creating my custom insole and embed a wood support around the injured bone. I experimented with some wood cut-out and it worked. I can make wood part but I can't find good materials which I can create main part of the insole and a normal matching part for opposite foot.
Assume I want to make custom insoles, what kind of materials I can find and where? I think folks in a car forum would have more knowledge in hardware and do-it-yourself ideas.