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Old 04-28-2006, 07:15 AM
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rust

Well, the same ole question-
when you have a panel with a rusted out area, I know how to cut out the rust and such, but then how do you put in a metal patch? You cannot just weld it on top of the area, so is there a lip that can be formed to put a piece of metal in or what? Any advise would be very helpful
Mike

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Old 04-28-2006, 07:27 AM
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Mike,

You will get a lot of answers on this one. Generally, the guys who are in the Auto Body business can say that they will flange the area (what you describe), and weld (or Bond) a patch on top of it. The restoration crowd will generally say that they will butt weld a patch in (cut out the area, insert a piece of, say 18 gauge, scribe, cut it out and weld it in)-they will say a Flange weld will heat and contract at a different rate, so the repair may be compromised. I think there is a place for both types of repairs. I prefer to butt weld myself (it can take more time to do), but feel it is a better way in that moisture cannot get behind the Flange and possibly rust through, although there are ways to stop that also.

What are you trying to repair? Is it a flat (or low crown) panel? Which type of weld process are you going to use? By the way, where in Colorado are you?
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Old 04-28-2006, 09:19 AM
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I am working on my 55 Chevy truck and it has a ton of rust on it. I have used the lap and weld method, which is acceptable in the repair industry. I also used the butt weld method. Both methods worked out well. If you look at my journal you can see both methods I used. On the lap method I did cover the lap with fiberglass to waterproof it just in case. Keep in mind I am new at this and learning also.

By the way welcome to hotrodders. This is a great site that is very helpful.
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