My plan for this genius hour project is to create a home built welder using basic parts that can be readily found in many people’s garages or at junkyards. I want to be able to help people who do not have a welder and would really like one but can not afford the purchase. The welder may not be the nicest or most efficient, but I want it to be able to make sound welds on fairly thick metal such as 3/16”. I plan on building the entire thing without incorporating any welding because others who want to build it will be doing so without a welder, most likely. I believe I will be using a small engine such as a Briggs and Stratton 5 horse and run a belt from it to a car alternator. This will produce a dc electrical current that can be run to an electrode used for welding. Different sized alternators will give produce different maximum amps. Also, varying the motor rpms will be a way to control the amps, so the welder should be adjustable. I plan on doing more research and performing tests on car alternators to figure out what else I will need, as well as researching others who have built their own welders.
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March 2017
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