aluminum spool gun for miller 211 weak welds

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    • #54231
      Participant
      Stanley Alvarado

        My Miller 211 spool gun is making weak welds with 0.030-inch wire at 20 CFH argon, and welds breaks easy. Any tips?

      • #54233
        Moderator
        Scott Whitaker

          weak welds comes from bad prep or grounding. Clean aluminum with alcohol to remove oils, check ground clamp, And bump amps to 120 for strength. set argon to 22 CFH, and use 0.035-inch wire for thicker stuff. this boosts weld durability.

        • #54234
          Participant
          Lori Best

            Increase voltage to 20V, it gives better penetration for stronger welds.

          • #54235
            Participant
            Vickie Mcdonald

              check polarity for better weld strength, set wire feed to 220 ipm, And clean liner regular.

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