just a footnote: Just heard that Gold is extremely effective at reflecting infra red. You can see windows which have gold coating on outside to keep heat in/out but mostly out. how about trying some gold leaf on a piece of backing for your infra red film. ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.