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  1. #1
    Join Date
    Aug 2009

    Default Steel CO2 Tank for Mig Gas

    I got a new welder and need to get a gas bottle. I have an extra 20# steel CO2 tank from a beer setup that is currently still certified. Is there any reason why my local gas company can't switch the head out and fill it with mig gas? I realize that mig gas is sold by volume and not weight, but I don't want to buy a new tank if this will work.

    Thanks in advance.

  2. #2
    Join Date
    Dec 2007
    southern California


    You can use CO2 as a shielding gas for solid wire mig welding.

    If you want an argon/CO2 mix gas, take your CO2 bottle into the local welding shop and ask to trade it for a mix gas bottle & fill. It's done all the time.
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