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Thread: Best Argon/CO2 mix for MIG welding AE86 steel?

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    Junior Member Velociraptor's Avatar
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    Default Best Argon/CO2 mix for MIG welding AE86 steel?


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    Hey everybody, first post.

    I am just learning to MIG, and am attacking the rust in my rear quarters.

    Can anybody advise me as to what the ideal gas would be? I have read that C25 (75% Argon, 25% CO2) works best for auto body work.

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    It's mild steel you are welding so any argon mix will work well.

    Take your time and practice on non important panels first.

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    Junior Member ke70+ae92's Avatar
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    plus keep the heat low, its so easy to blow holes in such thin steel
    V6 TT KE70

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    Just to add to this...Where are people getting cheap gas from?

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    I bought a bottle for around $300 and pay $80 for a refill. The bottle is around weist high

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    Gasweld will have the purchasable bottles. Much better than hiring for the occasional user.


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    Senior Member kaibeecee's Avatar
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    For body work 0.6mm wire is best

    75% Argon 25% C02 is preferable (aka argoshield lite/supashield 25 etc)

    purchasing a bottle and paying per refill is much better than shitty rental rates (~$12-20 per month)

    use lower amps, more wire for more solid tacks.

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