I am reworking a Kellogg's clone trooper helmet and I am just wondering what kind of fiberglass would be the best to line the inside with. I know of a few people that have done this around these forums so i figured i mite get some good advise. I am thinking of buying the stuff they have at WAL-MART. Never worked with fiberglass before so i just want to make sure i don't melt the helmet or somthing. Thanks.