Very soon I am will be into a project that will require I plug and refinish
some holes in relatively thick sheet metal ( approx .10 thk) What does one
use when welding (mig) to back up the hole? I was thinking of a large
block of aluminum since the steel won't stick to it and it would have
sufficient mass to prevent the metal from flowing out of the hole. This
procedure would sure make it much easier to finish the surface off since I
should only have to grind one side flat since theocratically the other side
would already be flat since the backing plate would prevent any
protrusions. Anybody already been there done that, got a better idea etc.?
Barry Schwartz (San Diego) bschwart@pacbell.net
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