Tag Archive for 'GMAW'

Welding

Last year I took an evening course in Basic Welding at Conestoga College. It was just an introductory course for people who want to learn how to weld for their own projects. No credit toward welding as a profession.

It covered oxy-acetylene and a bit of GMAW (aka MIG). I like oxy-acetylene, but i didn’t really care for GMAW. With GMAW, I felt like I had no control over the process. I couldn’t get an intuitive grasp of the effects of all the variables (voltage, current, wire feed rate, arc length), and the welding gun nozzle is so big that I can’t see what’s going on in there. With oxy-acetylene, everything is right there in front of you.

Besides, when it’s time to go buy yourself some equipment, an oxy-acetylene rig is cheaper than a reasonably-capable GMAW machine. And a decent GMAW machine may require a new electrical circuit to power it. And you can cut with oxy-acetylene: it’s two tools for the price of one.

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