[Jodi Bennett]

To all community members, at my wit is end cause my Lincoln Precision TIG 225 struggles with thick aluminum, Using 3/32-inch tungsten at 20 CFH argon, and welds lacks penetration depth. any tips?

[Brett Walsh]

Thick aluminum needs higher amperage for penetration, Set to 180 amps for 1/4-inch aluminum, My Lincoln TIG struggled too, Use 1/8-inch tungsten for more power, Clean with alcohol thorough, Set AC balance to 65% for control, Use 25 CFH argon for coverage, Bevel joint edges for better fusion, Ensure tight ground clamp, Check for tungsten contamination.

[Michael Lee]

poor penetration comes from low amperage, Increase to 200 amps for stronger welds, My Lincoln welds thick aluminum now, Clean with acetone thorough.

[Andrew Long]

Bevel edges for deeper weld penetration, it helps.

[Michael Casey]

Use larger tungsten for thick aluminum, My welds got better after switching, Clean thorough.

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