The Stovebolt Site Forums The Shop Area General Truck Talk Frame Rivets

Wow, its not this complicated.
A bucking bar is as simple as a bar of steel with a rivet head shaped depression in it. The bar should be as big and heavy as you can stand to hold, if its not quite big enough hold some more mass behind it, a spare hammer or something. For the rivets on the flange of the frame where you can't hold something big behind it I've used a short bucking bar and a prybar against the opposite flange. Or a 2" square bar with the rivet head depression on the side, use vice grip clamps to quickly clamp it and the already hot rivet to the frame flange.

Any which way you go about it you have to be very quick, only have a couple seconds before the rivet is to cool to set properly. If set to cold the shank doesn't expand into the hole and in short time it'll loosen, don't be afraid to punch a new one out and give it a second try.

Bucking bars are something you can and should make yourself. I haven't found a source to buy them from. You can be creative and make them crooked or offset to fit around obstructions. I've heard the term "*" used to describe a bucking bar, get the picture?

Grigg