Bondo was in its infancy during this time. I don't think it was something that was ever in the Barris shop of the '40s-'50s.. As has been said, all kinds of semi structural things were being done with lead. It was the "magic" stuff. I can't bring myself to even think about trying anything like that with bondo. I do like it and, when used for the things it was created for its bullet proof. I might start looking for some good bargains on airfare David.