I have read, and enjoyed this forum for awhile, and I know one of you can answer my questions. What kind of foam do most of you use, and where can I find it? I've tried every craft and hobby shop within 100 miles of where I live, and the only thing I can find is green foam, (which is very hard, and seems to be quite brittle.) It is sold in relatively small chunks, and is way too expensive. Any suggestions? BTW, none of the home improvement stores stock anything but the thinner stuff, like maybe 3/8 inch thick. Thanks, guys and gals. The other "engineer."