It has been 7 yr or so since I bought klegecell from Wicks. I have their current catalog and will look in there when i get home tonight. They had a composite experimental aircraft kit that utilized klegecell. They no longer offer the kit so maybe the klegecell went out with it. Not being able to hot wire the stuff is a major problem for many builders. Incidentally, if you didn't know... blue foam means it has a fire retardent added, that is why construction grade foam is almost always blue. ???