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Breaking Cups????????

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  • Breaking Cups????????

    I have been breaking alot of cups aluminum welding lately? I've been using 3/32 tung. with a #7 cup on 1/8" alum. I get a few passes and the edges break off. I am no means a master aluminum welder, or welder but!!!! I have plenty of post flow I think @ .25 at 17 cfm I have never had a problem before, but who knows. Has anybody else had any thing like this?
    Thanks for all the help

  • #2
    If I remember right, your #7 cup kinda rolls in at the orifice. Your pushing a lot of heat through it.You should use a straight cup, and back off the gas, it seems to be cooling it too quickly.

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    • #3
      I will give that a shot!! Thank You!!

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