[Tinker]

You are absolutely right GM. I should be better at explaining myself. That's on me.

In my opinion. I am far from a pro welder. And it is just my opinion.

Straight argon works well for tig. I don't mig very often. But I can use it for most practical proposes. At $250 a tank for a second tank, I'll do that. If I'm doing structural I will do tig over mig everytime. But if you are welding aluminum on mig you should use straight argon. Tacking sheet metal with mig and argon is less worrisome. Burn through maybe in my experience.

Tungsten Inert Gas (TIG) welding require pure Argon (AR) as a shielding gas to protect the weld pool from oxidation and from Nitrogen absorption. Regardless of what type of metal you are welding whether it is mild steel. stainless steel, copper or aluminum the gas you should use is Pure Argon


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