Sourcing Rare Earth Magnets

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Introduction: Sourcing Rare Earth Magnets

About: Engineer making renewable energy products for African entrepreneurs.

Looking for cheap rare Earth magnets? I picked up this set of eBay for under $15 and it contains 188 of these little (but very strong) magnets and three dozen steel balls. Hopefully this gets more people into the magnetic challenge. I'll be posting my $1 digital counter/odometer/much more within a few days (and finally enter the challenge :D).

Simply grasp one end of a bar with pliers and squeeze. Then touch the bar to something magnetic such as a ferrous pair of pliers :P The idea is to deform the casing slightly which allows the magnet to pop out. Mine were only pressed in - no glue.

Be careful when putting them together - they are capable of self destruction if you snap them together. And once they are together -- its a PITA to get them apart (I used pliers ;) ).


Yes, I know you can find magnets around for free.... but if you can find this quantity/quality - I'd be impressed.

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    39 Discussions

    0
    Zaacharia
    Zaacharia

    3 years ago

    Late to the game but with round magnets you can make a rail gun and shoot ball-bearings through the walls (er, don't do that - build a backdrop).

    0
    pgd5000
    pgd5000

    9 years ago on Introduction

    I wish i would have seen this a year ago, i had one of these filled to the point it would not close, but i had to throw it away :(

    mega-brands-combo-magnetix-cabinet-case-120-pieces_1920238_175.jpg
    0
    super_genius
    super_genius

    13 years ago on Introduction

    I HAVE A BETTER IDEA!!! I LIVE IN A TOWN WHERE AT THE DOLLAR STORES THEY HAVE A PACK THAT WOULD HAVE ABOUT MAYBE 100 OR SO RARE EARTH MAGNETS FOR LIKE $1.04 IN THE LITTLE GENERIC VERSION OF THE "MEGAMAGZ" mmmbbuahhahahahahhahahaa

    0
    Noodle93
    Noodle93

    Reply 13 years ago on Introduction

    I have a better idea which involves the 'Caps Lock' key. But on topic: Magnets are awesome, and there's lots of instructables that use them.

    0
    girrrrrrr2
    girrrrrrr2

    13 years ago on Introduction

    nice job...i just cut my hand open...big time!!!

    0
    Bongmaster
    Bongmaster

    Reply 13 years ago on Introduction

    how in the name of great buggery did u manage that?

    0
    girrrrrrr2
    girrrrrrr2

    Reply 13 years ago on Introduction

    ...metal shears...cutting the plastic in my hand...being stupid... does that help...

    0
    Bongmaster
    Bongmaster

    Reply 13 years ago on Introduction

    clever trevor :P well its a learning curve :)

    0
    girrrrrrr2
    girrrrrrr2

    Reply 13 years ago on Introduction

    ...my names not trevor... its girrrrrrr2... the cut/scar is going to be a curve(really)...lol

    0
    doobuzz
    doobuzz

    13 years ago

    Try dismantling old hard drives, you know like the 1 GB ones you can pick up for nothing at the dump in old computers. My friend and i have been getting some really big (and powerful!) ones for nothing at all. This one picked up a chair in our science lab!

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    0
    stranoster
    stranoster

    13 years ago

    Try www.thinkgeek.com they are a reliable source of rare earth magnets

    0
    Robotic_mage
    Robotic_mage

    14 years ago

    trebuchet03; Sorry I mistyped(misspoke) 1/8" Dia x 1/16th" Thick NdFeB Disc Magnet, Grade N40, Ni Plated with Matte finish, Axially Magnetized (the top & bottom flat faces are the north & south poles). Click on image for larger picture. 1/8" Dia. x 1/16" thick Disc Pack of 50: $10.00 www.unitednuclear.com Left hand column, toward the bottom are the magnets.

    0
    PetervG
    PetervG

    14 years ago

    Lot's of dollar stores sell these kits to, i'll buy a kit next time I go and post back if they are or not rare earth magnets.

    0
    sockmaster
    sockmaster

    Reply 14 years ago

    These are the kind of magnetic link toys I've seen at my local dollar store. Each set gives you 22 1/4" diameter by 1/16" thickness NdFeB magnets. This comes out to less than 5 cents per magnet and you get a bunch of free ball bearings too :)

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    0
    FrenchCrawler
    FrenchCrawler

    Reply 14 years ago

    I just refound your instuctable and was reading it: https://www.instructables.com/id/EKXVKRFW8JEP286SSU/

    I want to try it out but lack the surface to do so.... maybe if I take the metal casing off one of the old computers, cut it flat and hang it on my door... Then I could have a welcome (or what ever I want) sign.

    0
    trebuchet03
    trebuchet03

    Reply 14 years ago

    cool! bigger diameter - but thinner magnets :D Just be careful as these might me more likely to break in half (if snapped together)... I've already chipped one of mine :P

    0
    trebuchet03
    trebuchet03

    Reply 14 years ago

    Be careful with dollar stores... while yes,a dollar is cheap... sometimes they are ripping you off. However, these might be worth it if there's enough and they are not a cheaper magnet...