Comment on When I was a kid my Dad made a magnet charger with some electrified copper coils would this be something that could be used to achieve similar results somehow? TIA

• lightnsfw@reddthat.com ⁨1⁩ ⁨year⁩ ago

  Putting a tool in a powered coil will magnetize it temporarily but I don’t think it will stay magnetic or at least not for long. They sell little magnetizers that you can get cheap that will last a lot longer though if that’s what you’re looking for…

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  • BrownianMotion@lemmy.world ⁨1⁩ ⁨year⁩ ago

    Depending on the coils number of windings, and the size of the tool it will magnetise it pretty well. I used to do this to screwdrivers before they came pre-magnetised. And they will stay magnetised for a very long time.

    Most of the time the reason for becoming demagnetised is due to dropping the tool several (many) times.

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  • cmnybo@discuss.tchncs.de ⁨1⁩ ⁨year⁩ ago

    I’ve had good results discharging a 450V 1kJ capacitor bank through several turns of 10 AWG wire. If you don’t have a capacitor bank laying around, one of those magnetizers will work just as well.

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  • nothacking@discuss.tchncs.de ⁨1⁩ ⁨year⁩ ago

    Really? If have had good results just placing a screwdriver inside an electromagnet, still magnetized a few years later.

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    • lightnsfw@reddthat.com ⁨1⁩ ⁨year⁩ ago

      Maybe it depends on the coil/power source. When I tried it I was just messing around with a coil I had and 12v source and it was not that effective.

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  • lossykittens@reddthat.com ⁨1⁩ ⁨year⁩ ago

    I appreciate it, I didn’t realize it was so temporary

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