ORIGINAL: shauntot
also, i can't see the thread you posted, the link you gave actually points to a website called pflag.com ?? weird
Hmm - got a couple of stray characters in the URL - I've fixed it in the original post. Give it another try.
I think fiberglass will stand a moderate amount of heat, just pay close attention to it. I did most of my work with a trim iron, so the heat can be kept pretty concentrated and should minimize the potential problem.