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Originally Posted by BoneZ
I'm going to attempt to learn.
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Think of it like brazing or gas welding. Instead of of a gas flame. You have an electric flame (arc). Once you get your puddle started, dip the end of the rod in. Lots of video's to show you how on you tube. The main thing to remember is joint prep. It's got to be clean. Welding steels is with DC. Welding aluminum is with A/C. If you want to weld aluminum, you GOT to get a machine that has both DC, and A/C. For most applications. Argon gas will work. Helium is more $$. On some metals. A mixture of Ar/H or Ar/He is used. Tip shape is another important thing. Different shapes will give you different arc's for penetration, plus for different size of wire. For welding aluminum, you wiil use a ball shape. Everything else is a V shape. Some with a flat point.