Both of my rear quarter panels are shot. I sanded of the inch of bondo off both to find the actual metal to be in pretty bad shape. I am going to replace the skins on both sides and was wondering if BRAZING the panels on would be easier/better that welding.
I know what your all saying, but hear me out. The brazing uses less heat and there would be a less likelyhood of warping. I could flange the new panel to go under the existing and braze them together. I just don't want to warp the hell out of the panels and have to bang the crap out of them and end up with a lot of bondo again.
Is this feasable or even possible?

 

I've replaced a lot of sheet metal. The panels won't warp if you keep your spot welds far a part and use water (or air) to cool them down. It'll take you most of the weekend to do one of them, if you do it right. Use led to prevent corrosion.

 

+1 on welding. I would cut and weld along the top body line, where the metal is stronger, spacing your spots properly. That way you can also grind and re-shape that edge to match original. I've done this on 2 different cars, and it works like a champ.

 

I've seen a repair like that on a 1970 ht and I wasn't impressed. I'd definitely do it the normal way.

 

hellsnock

What was wrong with the job. Was it done poorly or was the process itself bad?

 

With brazing, you create a lot of heat as well, especially if you are making a zipper and not spots. A quick zap with a spot weld will create even less heat than the brazing method if you take your time and let each spot weld cool before hitting the next one. Bronzing is used for connectng copper/bronze metals, not sheet metal.

 

Not Bronzing, brazing. Its like soldering.

 

Check out these sites, good info on qtr panel replacement.

http://together.net/~manycj/69Mustang.htm
http://homepages.together.net/~groovygreen/LE600_1.htm

 

+1 on welding , When I did my skins, I klico'd the panel over the original about 3 to 4 inches down from the top bodyline. I then cut through both the skin and the original removing the klico's which formed my imaginary line as I cut. While I was at it I did the outer whellhouse which is likely shot on yours also. I then butt welded the skin after all the old was off. Being cautious taking my time and spacing the spotwelds performed with the mig welder produced very good results, which when you run your hand inside the trunk you barely feel the butt joint. Here is some pics from a previous post. I will try to post more.

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Thanks guys. I never thought of welding the panel together below the bodyline. I'll keep that in mind when I get to that point. This weekend I'll be pulling the windshield, back glass, trunk and hood. I might get to the fenders, but we'll see. I need to pull it all apart, then figure where to begin with the resto. After I figure out all that's wrong I'll start making it right!