John Lucas, is this what you are looking for?
Ron in Drums PA
>I noticed this stuff in a craft store today and they had some samples of what I think you where talking about.
http://www.eti-usa.com/consum/castresn/castresn.htm
http://www.eti-usa.com/books/castinbk/castidbk.htm
I didn't read all the post in your thread, so I hope I'm not repeating what someone else has said