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  • Users: bhrollin
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  1. bhrollin

    Demagnetizer

    I need help building a demagnetizer. As far as I know, I can demagnetize a steel part by passing it slowely through an alternating magnetic field. So I want to make a large solenoid by wrapping wire around a large cardboard tube and then passing the part through it. But I don't know enough about...
  2. bhrollin

    Demagnetizing Coil

    I am a machinist and know next to nothing about electricity and nothing about magnetism. I have a very valuable surface grinder chuck, a 6x4x20 inch piece of laminated steel and brass which has become magnetized. I would like to demagnetize it by passing it through a 10-12 inch diameter...

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