[AT] Welding Question

[Larry D. Goss]

Copper can be used as a backing block for filling large openings while
welding.  I should think you can weld pin holes with no backing plate at
all.  You're not talking about holes the size of bowling pins are you?
:-)  If he's burning through while welding pin holes, he has the
amperage turned too high. 

Larry

-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Len Rugen
Sent: Monday, June 21, 2004 8:25 PM
To: tractor
Subject: [AT] Welding Question

My son asked about something about filling pinholes in sheet metal with
a
mig welder. He saw someone put a copper or brass item behind the hole
while
welding.  Whatever it was, the weld didn't stick to it making it easier
to
make a good looking weld.

He is restoring a very old oil pan that was badly mangled.  It had been
creased and had a heavy steel "skid plate" brased on the bottom.  He has
all
that off, rewelded the bung but still has some pin holes in the creases
to
fill.  (Dad, I need more welder wire, can you get some tomorrow?)

Thanks.

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