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Thread: Joining magnetic clasps to safety chain

  1. #11
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    Quote Originally Posted by vini the kiwi View Post
    hi ho

    you could try holding a strong magnet and stroking the magnetic part of the clasp in a single direction, it may re polarize the iron particles

    vini
    Thats what I was going to suggest too. Re-magnatise them with a strong magnet.

  2. #12
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    Quote Originally Posted by AlexandraBuckle View Post
    Thats what I was going to suggest too. Re-magnatise them with a strong magnet.
    I could be wrong, but I think they use those "neobyandiumonionbhaji" type magnets and I seem to recalll they cannot be remagnetised by simply stroking them...

  3. #13
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    You can't heat magnets.the only way you are going to solve this problem is by lazering or PUK welding the jump ring.it's a simple job to do ,if you have the tool that is.

  4. #14
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    Quote Originally Posted by Green Monster View Post
    I mentioned this on the wish list yonks ago, to have the magnets come seperate to be put into the clasp after soldering. The get round I use are the self loking jump ring things that....Cooksons don't sell.
    A certain metals company stocks them.They are called Link Lock.
    If I am allowed to put a link (link...geddit?) here let me know.
    G
    Cooksons used to sell them, cos I was buying them for a while, but they stopped stocking them much to my disappointment

    Quote Originally Posted by Green Monster View Post
    I could be wrong, but I think they use those "neobyandiumonionbhaji" type magnets and I seem to recalll they cannot be remagnetised by simply stroking them...
    Ahh I see! ....absolutely no idea what you mean!

  5. #15
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    Quote Originally Posted by AlexandraBuckle View Post
    Ahh I see! ....absolutely no idea what you mean!
    Neodymium magnet

    As found in hard disc drives, BTW - if you ever need a source of cheap, dangerously strong magnets. Note the lower Curie temperature of them versus ferrite magnets - so they'll lose their magnetism at temperatures as low as 310C (depending upon the exact type).

    Oh, and remagnetising them requires some fairly serious kit - you might be able to do it with an MRI scanner, but a) I wouldn't want to run the risk of trying and b) there tends to be a bit of a queue waiting to use them...

    Physics is of no interest to me unless I've got an application to go with the theory...
    Last edited by ps_bond; 15-12-2009 at 12:14 PM. Reason: Typing and talking at the same time may cause typos

  6. #16
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    Ahh, now I really do see! Thanks Peter

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