Hello everyone! You are watching video: How to make a simple welding machine from spark plugs at home! Great intelligence

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0:00:18 How to Make a Simple 1.5V Battery Welding Machine at Home
0:06:19 How to Make a Simple 1.5V Battery Welding Machine at Home! Great intelligence
0:12:12 Genius invention from craftsman! How to make a 9V battery welding machine
0:16:39 How to make a simple 1.5V battery welding machine at home by Harvard professor
0:21:19 Excellent welding technique using spark plugs and 12V battery
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