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A simple construction using the primary coil of a transformer of an old microwave oven.The secondary was destroyed and after replacing thiw with a new coil of two rounds we have about 2 V and about 600 - 650 Amps.I used copper electrodes 4.5 mm thin with special shape. . I 've also used a footswitch in the primary to have my hands free.It works perfect. You can see the use and the construction here.
https://youtu.be/gLwLF8tlLl4
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Thanks mariost! We've added your Spot Welder to our Welding category,
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<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="http://www.homemadetools.net/homemade-spot-welder-24"> <img src="/uploads/221499/homemade-spot-welder-24.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="http://www.homemadetools.net/homemade-spot-welder-24">Spot Welder</a> <span> by <a href="http://www.homemadetools.net/builder/mariost_2">mariost</a></span> </div> <div class="tags">tags: <a href='http://www.homemadetools.net/tag/spot-welder'>spot welder</a> </div> </div> </div> </div>
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