[Nancy Smith]

To all community members, out of ideas cause my Millermatic 211 arc drifts on aluminum, Using 0.035-inch 4043 wire at 20V, and welds looks weird. Can you give me a solution to this?

[Steven Underwood]

Try a spool gun for aluminum, it works better.

[Paul Perez]

Arc drift comes from bad grounding or prep, Check clamp for rust or wear, My Millermatic 211 drifted too, Use 100% argon at 25 CFH, Clean with alcohol, Push wire don’t pull, Check spool gun tension, Use 250 ipm.

[Marcus Leon]

weird welds comes from dirty aluminum surfaces, Degrease with acetone thorough before welding, My Miller welds aluminum clean now, Check gas flow consistency.

[Nicole Anderson]

Check gas flow, low argon causes drift.

[Tanya Monroe]

Use 0.025-inch wire, it improves aluminum weld stability.

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