We weld a lot using 75%/25% Argon and CO2. The type of cover gas
has a lot to do with how much splatter you get. I only weld steel so
I don't know what to tell you on aluminum. You would be best asking
your local welding supply. They will have all the answers to your
questions.
Mike B.
Quoting Yuri Klepach <civicr1992@yahoo.com>:
> Hello,
>
> what kind of gas is required for MIG welder. I've been told that Argon &
> CO2. Does anyone know which one is better? I intend to use the welder for
> stich welding the unibody & a roll cage. I also plan to use it on exhaust &
> some aluminum bracing. So, I will weld mild steel, stainless steel &
> aluminum. Which gas is preferred?
>
> Also, which capacity of the gas tank would you recommend? 20 cu. ft? 40 cu.
> ft?
>
> Appreciate any help!
>
> Yuri Klepach
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