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Originally Posted by Greg
The other thing amateurs do is they fit up the piece -- then start tacking or whatever. They never pick up a hammer and dolly, or whatever tool they need to use, and ADJUST the piece as they go. They just weld away - then when they're done they wonder why it doesn't look all pretty like the pictures of other guys work. You've got to "work" the metal as you go IF necessary... to keep warpage down - to keep the gap tight - and blah blah blah. It's not just fit once and weld it. This stuff takes some patience and some some eyeball time - and adjustment as you go.
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So true. I know it took me some time under helmet before I started to work the metal as I went -- and I thought I was "cheating", or lacked the skill to cut the metal to fit properly as I went. Now I don't do much welding on outer body panels; my sheet metal welding is relegated to the interior and bottom of the car. So I don't use TIG. It's too hard to get all three hands needed into position when welding up a toe board from inside the car.
I think the reason that working the metal isn't as well-known as it ought to be is that the typical body panel replacement article in magazines doesn't cover it. I've not seen it, and most certainly the notion of MIG tack-welds followed by TIG finish-welding hasn't been covered.
jp
ps. BTW, great thread!