I thought welding in a patch would be easy....
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Bump, well everything's welded, the panels are a little low but I should be able to get away with a small amount of filler.
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You can use a copper welding backer (just a small piece of copper plate if you don't wish to buy a fancy one from Eastwood or what not) to put behind the holes. You can't weld to the copper, so it allows you to fill the hole while having something to absorb some of the heat.
The other way I've done it, a bit messier and requires some more experience, is to just tap the torch ( mean pull the trigger VERY quickly and pull away) at the outside edges of the hole almost pointing the torch somewhat inward towards the edge itself. Even if you can just lay a dot of weld there, you can build up on that to thicken the metal so it won't burn through and work from that point out. Once you get a decent weld chunk going there, start from a few degrees around the hole and do the same, working to connect the two points.The goal here is just to build up a little thickness on the existing metal to help absorb the heat/strengthen the edges for when you start filling the hole. Once you get it down, it is really pretty easy. I have filled some big gaps on very thin sheet metal like this. The copper spoon/backing piece would require less finishing work though and much less chance of warping the metal if it is a long, flat panel being that you won't have to actually weld to the metal as much to fill the hole, and the copper will absorb much of the heat. |
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How does one weld in a patch on a quarter panel that doesn't have anywhere to clamp the ground cable? Weld a bolt onto the patch panel and then clamp to that? Also I'm a little worried about how I'm going to hold the patch in place, but I do have magnets.
Anyone ever plug weld in metal strips behind the panel where the patch is going to be in order to have something to line up the path on? I've seen this in one of eastwoods videos but I'm a little worried if you could visually see where it was done due to sunlight heating metal up at different speeds due to the extra thickness? Thoughts? Thanks |
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