[Daniel Evans]

Hi guys i am a little bit confused cause my Millermatic 211 welds crack on steel, Using 0.035-inch wire at 20V, and welds cools too fast. Any fixes?

[Tyler Joseph]

Cracks comes from fast cooling, Preheat steel to 200°F, My Millermatic 211 cracked too, Use 25 CFH argon, set wire speed to 240 ipm, clean with acetone, check for proper joint fit-up, and use 7018 electrode.

[Blake Sanders]

Try slower cooling with blankets, it helps.

[Samantha Dyer]

cracking happens with dirty steel, Clean with alcohol, My Miller welds hold now.

[Ann Miller]

High voltage causes cracks, lower to 18V.

[Thomas Lucas]

Use 0.030-inch wire, it puts less stress on welds.

[Author]

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