[AT] Welding Question

[Terry Welch]

I have done pin holes both ways. I use a brass plate when I use a backer. It
helps stiffen the area enough that you do not blow through next to it. Or
you can keep the weldr turned down and it should work ok. Remember that if
there is ahole in a spot the metal is most likley thin around it.
Terry

"Larry D. Goss" wrote:

> 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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