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Thread: TIG - Practicing beads on mild steel, getting a bump at the end

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    Default TIG - Practicing beads on mild steel, getting a bump at the end

    Oooo, when will the winter lighten up
    Well, I can practice welding

    I'm practicing beads. This is 1/4 mild steel. Filler is 1/16 ER70S6, and tungsten is 3/32 2% ceriated. Machine is an analog iTig 200. I've got a foot pedal. Post flow is around 2:00 (scale of 0-25 might put that around 12 seconds), and down slope is set to 1 (on a scale of 0 to 5). I'm left handed so the torch goes from left to right and I end on the right. I'm ending up with a bump at the end of the bead. I've tried changing a few things but haven't really figured out what makes this better or worse. Maybe someone else has. I've put in the standard dime size benchmark.

    While I've got ya looking, how am I doing? I know some of these are too flat, and I'm learning more about what happens as the base material soaks up more heat. Are some of these beads at least halfway decent? I've been a hobby welder long enough to figure out there's a lot more I still need to figure out! I have read in other postings mild steel beads should look at least a little shiny, but the only time I get anything shiny is when tack welding.

    Thanks in advance for your time and tips.
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    Sean M
    Illinois
    I-Tig-200 (March 2012)
    Harbor Freight 90 Amp Flux core Mig
    (Sold this one but I might have picked up some bad habits -->) Harbor Freight 130 Amp lift-start Tig (the red one)

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