⚠️ Important disclaimer (please read)
Disclaimer: This DIY involves very high-voltage transformers and wiring and could fatally electrocute you or someone else, start fires, or cause serious injury or property damage. This project is for entertainment/educational purposes only and does not endorse anyone attempting it. Do it at your own risk. If you are not experienced with mains electricity and transformer safety, stop now and buy a commercial spot welder or ask an experienced professional.
What this blog will (and won’t) do
What you’ll get here:
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A conceptual explanation of how to use two microwave power transformers (MOTs) to create a DIY spot welder.
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A general materials and tools list.
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Safety guidance and recommended protective measures.
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Alternatives that are much safer and often cheaper in the long run.
What I will not provide:
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Exact wiring diagrams or step-by-step instructions for modifying MOTs or wiring mains terminals in a way that could cause electrocution.
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Specific measurements, voltages, or instructions to bypass safety features on appliances.
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Anything that would knowingly enable unsafe modification of high-voltage equipment.
