The Stovebolt Site Forums The Shop Area Paint and Body Shop outer cab corner

The bottoms of the cab corners like to rot out and I see that cab corners are available. Would the patch fit outside/over the corner and kind of be riveted in place over the bad spot, maybe giving it a industrial look? I am not a bodyman at all and wouldn't try to weld it in, but a riveted cover patch would be acceptable for me. Like iron on blue jean knee patches from yesteryears.

texczech - What truck are you working on??? If for an AD Series truck, cab corner patch panels are available for both inner and outer pieces. Depending on if you have enough metal on the outer patch panel, you could put a step-flange along the edge so the cab edge overlaps the patch flange creating a somewhat level surface. If you just can't weld it, you could try a product called "panel bond" (a kind of adhesive) to install the patch. Or rivet it in place if that's acceptable to you.

Forgot to mention, it is a 1953 model. Would you be talking about putting a step flange on the truck, or the new panel? I have seen the "panel flanger" tools. Can they make the flange while going around the corner of the metal as well ?

I would think the step flange would go on the new panel such that it would overlap inside the truck metal. However, the panel flange tools I have seen (some I have) do not work well for going around the curved shape of the cab corner. The narrower the tool the better the chance but the more time it will take to work around the length of the overlap area.

I would not use a lapped joint on a cab corner (or pretty much anywhere else, for that matter.)
A butt joint is much easier to get the panel and the original metal edges lined up. And you can deal with shrinkage of the welds.You may wind up with small valley along the weld line on a cab corner, but that's not hard to deal with.
Take a look at MP&C's excellent writeup on MIG welding sheet metal HERE

One could use glue with a say 1inch wide sheet metal backer
An expensive way to do it but it would work
Me I would just TIG it

Cab corners are not structural. If I couldn't weld, I'd remove the rust inside and out and lay fiberglass on the inside and body filler on the outside.
I don't like to do things that way, but you didn't ask me that.
Besides that, a cab corner patch panel will very likely not fit anywhere near perfectly over your cab corner

Definitely true. That would be like trying to nest two same diameter hemispheres together. They would have a significant amount of space between them at the center regardless of thickness of each.