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MM 211 shielding gas

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  • ryanjones2150
    replied
    C25 will run smoother, but also check and make sure you have a good ground. Replace the junky ground clamp that comes with that machine with one that's a bit more skookum.

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  • Ironken
    replied
    I use C15 with my 252 for light material and for spray.

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  • aametalmaster
    replied
    Yup grab a bottle of 75/25 it will make a difference...Bob

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  • junkyardwarrior
    started a topic MM 211 shielding gas

    MM 211 shielding gas

    Have done some welding over the years and with GMAW processes, I've always used straight CO2. That's what I learned with and what I had success with. Last year I bought the Millermatic 211 when it was on sale, and I love the machine. However this last week I've been having an issue and I think I know the problem but I want to run it across you guys'. I was installing subframe connectors into a fox body Mustang, so you already know that the frame rails are paper thin. Anyway, everything was sanded clean but I had to do this on my back, welding overhead lap joints and butt joints. Couple times I found myself burning through. Most of the time it was fine but seems like if I turned the voltage down a little bit, the arc would become really sloppy, even after adjusting the wire speed. If I got the tip REALLY close to the work, it would do ok-still not great, but well enough to get the job done. Still got a bit of arc instability. In some cases I'd have to get the tip so close to the work that it would burn the tip which I felt was abnormal. I'm using ER70S-6 at .023 and the correct Miller/Hobart tips. Wire feed roller also correct for the .023" wire. I never had problems with wire feed-just arc instability. Seems like if I got far enough away from the work to see what I was welding, the arc would get so instable that it was almost impossible to run a good bead.

    Does this sound typical of straight CO2? I was considering trading my CO2 for C25.
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