⭕️Amazing way to sharpen a knife to razor sharp!
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What can be done from a laptop power supply. This video shows what a laptop power supply is capable of, in addition to its main function. How to make a simple DIY from a power supply unit that will be useful for welding small parts or wires. A useful invention for the workshop, which is easy to make from a power supply unit from a laptop. Few people know about this feature.

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