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How to make a spiral wire

Hi my dear friends. I’d like to show you a great idea of how to make a spiral wire.

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First, we need a USB cable or a cell-phone, tablet or other charging cable, which confuses you and you want to shorten it. Then, we need an electrical tape, don’t use scotch tape as it melts under a high temperature, and you would fail. A simple wooden pencil. Make sure that it’s made of wood, as nowadays there are pencils even with plastic, which melts under a high temperature too. A simple hair dryer, you may also use a hot air gun, but that won’t make a big difference as we don’t need to get too hot air temperature.

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Firstly, we have to fix one end of the cable on the pencil with an electrical tape.

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Then, begin wrapping the cable around the pencil. Stick the the second end with an electrical tape as well.

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Turn on the hair dryer on a maximum temperature and start heating the cable during one minute.

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Leave the cable to cool a bit, remove an electrical tape, get the pencil, and the spring wire is ready.

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Do you know?
Radio-frequency cable of 0,3 mm thick together with isolation, was developed in Russia in 1983. However it continue to keep the leading places at the size, and is deemed t be the thinest RF cable ever existing on the planet.

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