I mount quite a few sandhill cranes for use as decoys for my personal use (legal species to hunt in Texas). I purchase commercial forms and cut them. None of them will work without extensive carving for regular mounts or how I heavily modify them to work with my metal bases. I am looking at trying to learn to pour my own foam or cast them. How would I go bout building a mould from my carved up body? Some years I make 20, some none. Always mount a few for friends for thier homes that they bring to me. I am an amateur, but do hold the federal permit. I am tired of buying bodies as I cast my own heads....etc.. Thanks for any help. P.S. I am allergic to fiberglass, but ill brave it if its the only way.