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Thread: Flux core welding help

  1. #1

    Flux core welding help

    Whenever I switch my polarity to dc- for flux core wire I seem to get worm holes some kind of fierce. But when I swap it to dc+ It seems to weld fine. Does it really need to be on dc- for flux core? I can lay down some decent beads on dc+. Thanks in advance!

  2. #2
    most flux is DCEN. There may be a few exceptions but look at what flux you are using. It will say on the label.
    Torchmate 2x2 CNC
    Longevity 200ex
    Longevity Forcecut 42i
    Thermal Arc 186

  3. #3
    Senior Member Cope's Avatar
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    Nov 2012
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    Houston, Texas
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    Are you running gas?
    4T or not 4T, that is the question.

    Miller Model 88 250 amp AC, Miller MM210, Hobart HH187, Longevity Force Cut 42i, Longevity Tigweld 200EX

  4. #4
    I welded with my lincoln without reading to change the polarity so I was on DC + the whole time and it worked just fine too
    Jesse J Thompson Mig weld 140

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