Quote:
Originally Posted by 67c10rustbuket
Looks pretty good! Maybe try a weld backer or hole plug weld tool like this pic from eastwood. I have one that I mad at work. They are nice and keep you from blowing through the workpiece. Also the copper or aluminum absorbs heat so it helps reduce warpage. You can use a piece of scrap aluminum plate or copper tube flattened out. I use them all the time on sheetmetal.
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Thanks for the tip. I actually took a small piece of metal and clamped it under the holes I was trying to patch. It welded to the bottom, which is fine as no one can see that anyway.
As I said, glad I did not go with the floor first!