Mig Welding Tip #4 of 19...Use the right shielding gas

Mig Welding tip #4 is ...

Use the right shielding gas.

CO2 is good for penetration on thicker steel, but may be a little too hot for thin metal.

Use 75% Argon/25% CO2 for thinner steels as well as thick. Use only straight Argon or a Helium/Argon mix for aluminum.

Straight argon for mig welding only works on really thin stuff.Everything else welds horrible with pure argon.

You can use a tri-mix for stainless steels (Helium / Argon CO2). or even 98% argon 2% oxygen in some stainless mig applications.

I have been doing a bit of experimenting lately with a cheap way to mix my own gases.

When the results are in and if I can make it work the way I want, I will post the down and dirty "how to" right here.

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