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4mm magnet

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4mm magnet Customers Reviews

  • My son is still building things...

    posted by sisyphist

    These are remarkably powerful magnets for their size - one magnet can hold up one piece of paper on our fridge. That doesn't sound like much, but they're tiny! More importantly, you can fashion them into some neat patterns.
    We wrapped a coil of wire around a straw, hooked its ends up to a volt meter, and pushed a 'cylinder' of the magnets into and out of the straw, so my son could see how magnets moving past a conductor generates current! Worked really well.
    Great little magnets for hobby use!
  • Good waste of time!

    posted by garfieldp

    - entertaining to have around the house or a paperweight for the office- well polished metal- very magnetic
    Gave this as a present to my friend who enjoys unique gadgets, turns out he loved it.
    If there was ever a "good" way to waste your time, building structures with these cubes is your best bet. Make sure you buy a couple packs if you plan on doing more things with them.


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