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Re: Expandable spray foam....lost foam technique
Posted by Robert Oblon on November 15, 1999 at 23:53:06:
In Reply to: Re: Expandable spray foam....lost foam technique posted by bruce paul fink on November 15, 1999 at 20:59:09:
I just wanted to add that the use of urethane foam is and can be very toxic. Urethane produces cyanide gas as it exotherms. So take caution.