Thank you Joe,
Clear, consise and correct!!
Skip Higginbotham
At 05:01 AM 1/11/01 , you wrote:
>Group:
>
>ARC Welding: Used to build bridges and ships
>
>Mig Welding: Small Unit: Used to weld sheet Metal
> Larger Unit: Used for thicker sheet metal
>
>TIG Welding: Used to weld race cars, Space ships and things you want to
>last!!!
>
>Joking aside...penetration is what is important. One should make a
>coupon( sample piece) and test it for complete penetration before
>attempting to weld with some of the smaller machines. It may be YOUR
>LIFE!!!! I use TIG for almost everything...but I know the limit. I have
>had Nasa certs and welded space suit junk in past jobs. I was required
>to weld many coupons for testing and I learned the value of testing the
>penetration in various types of joints.
>
>Mig welds are VERY hard and if not penetrated enough, they will snap on
>impact of a crash. Too many welds are done with those 120 volt little
>shit boxes everybody sells. ( I know many a race car has been built with
>one!)
>
>Another thing: Use the correct rod for the job. Mig wire is NOT for
>heliacing! There is a difference.
>
>just my option!!!
>
>joe
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