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Old 02-14-2019, 05:43 PM   #8
pimpston65's Avatar
Join Date: Aug 2013
Location: corktown,mi.
Posts: 5,120
Re: gas welding vs mig

Originally Posted by MP&C View Post
If you can do a no-filler fusion weld, the OA or Tig does a nice job, but I think gravity helps any welding on a horizontal plane to sag a bit, looking like an undercut. Once planished, it will tend to fill in any voids that you should see a fairly flat panel, both front and back, requiring little to no filing/grinding. The caveat here is that you absolutely need access to the rear side to be able to planish.

What areas are you welding that do not have rear access?
the rear quarter on my suburban, both sides
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