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I'm real glad to find this forum. I just started welding at the community college this January and am now in my second welding class. At the advice of car restorers, I took Tig first and ended up buying a Lincoln PT185. I'm ok at Tig on a bench but welding floor pans is a different story. Right now, the Tig doesn't get much use on the car because I'm not very good at it.I've moved on to the trunk of my car. This pic is of the rear, inner fender well. The floor of the trunk is swiss cheese and slowly creeped onto this inner wall. I'm scared to cut into this because the bead isn't really replaceable. I'm worrried if I start cutting into this piece and weld a new piece of metal, (1) it might not have much to grab onto in that bead if rust has started there and (2) my welding skills just aren't that good to do something in that awkward of a place. Here is the view from the wheel well:Here is the view from inside the trunk: Someone suggested that I just put a copper pipe on the backside and fill it in with tig or mig filler rod. Is that feasible or will it cause rust problems down the road. If it's ok, how do you do it on thinned metal? Run beads through the holes or spot spot spot spot?Thanks,Jeff
Reply:Is that a '55-'57 Chevy that I see?I have done a ton of rust repair/modifications on these cars.Have you considered doing a mini-tub on the car? I have made several sets of mini-tubs for tri-five Chevy's.(I don't know if you've heard of it but I used to work at Williams Classic Chassis Works specializing in Tri-5's)I would suggest getting the panel media or soda blasted first. That will really let you know what you're working with. I bet the rust is farther up that wheel tub than you think!!Installing a set of mini-tubs would solve your problem or finding a donor car to cut the factory tub out of. Either way, I do all of my sheet metal work with TIG and silicon bronze rod.Just trying to weld over the rust will allow the rust to continue to grow. Not to mention giving you very crappy results for a repair.http://all-a-cart.comWelding Cart Kits and accessories
Reply:ZTFab,You have a great eye! Yep, it's a '56 sedan. I have seen the mini tub kits and they're slick looking and I'd love to do it but my welding skills are so basic that I'm afraid I'd get in over my head. Actually, the car has been sandblasted so what you see is the car with just a coat of epoxy primer. I guess that I'm going to have to do what I dread...weld a new piece in.So, just cut real carefully below the bead, make a new piece and tack it in about every 1" and then fill in between the tacks? This will take me several weeks. I struggle so much with it because I can't get the gap to be super tight. It's usually less than 1/16" but my past experience says that won't cut it.
Reply:Jeff, You definitely have the right idea about how to repair the metal.Have you tried working with silicon bronze rod?http://all-a-cart.comWelding Cart Kits and accessories |
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发表于 2021-9-1 00:14:59