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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
    Join Date
    Nov 2012
    Houston, Texas
    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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