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  1. C

    Switchable Permanent magnets?

    Hey everyone, I am wondering if there is a way to orient magnets so that the field is contained. Little background, i am trying to develop a device that can lift small Fe particles. I determined that a rare earth magnet will do the trick but i need it to be switchable and...
  2. C

    Electromagnetic particle collector?

    Hey everyone, I am trying to develop a small electromagnet to pick up (relatively) large amounts small shavings which are roughly 70-80% Fe in composition and are roughly 10-40 microns in size. This device needs to be powered by a maximum of two D-Cell batteries (maybe we can look into alternate...