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Spool Gun Handheld Wirefeed Welder Powered by Car Batteries

Step 9Spoolgun Video

Spoolgun Video

Notice that I'm controlling power with the distance to the work. Close in melts in more, further away increases the wire resistance. That decreases current and the weld is cooler and builds up more metal. Notice that my first weld is terrible because I forgot to do that. The next welds get a lot better.

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Author:TimAnderson

Tim Anderson is the author of the "Heirloom Technology" column in Make Magazine. He is co-founder of www.zcorp.com, manufacturers of "3D Printer" output devices. His detailed drawings of traditional ...