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Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Where to get rare earth magnets?
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Old 11-16-2007, 05:01 PM   #1
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Default Where to get rare earth magnets?

I'm not brewing this weekend, so I figure I may try to make my stirplate. Where did everyone go to get their rare earth magnets?


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Old 11-16-2007, 05:07 PM   #2
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Old computer hard drive...


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Old 11-16-2007, 05:10 PM   #3
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Yup i have seen them on ebay, but they are free fron the old HDD. Be careful whacking them off (did i say that?). I broke one taking it off.
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Old 11-16-2007, 05:16 PM   #4
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I wish we didn't toss our old computer at work recently. Where in the hard drive are they?
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Old 11-16-2007, 05:20 PM   #5
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Try this... http://cgi.ebay.com/4-Rare-Earth-Neo...QQcmdZViewItem
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Old 11-16-2007, 05:23 PM   #6
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Canadian source www.leevalleytools.com
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Old 11-16-2007, 06:03 PM   #7
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Quote:
Originally Posted by Oedipus Rex
Over $20 shipped just for the magnets for a stir plate? that's way more than you need to spend, you could build a whole stir plate for that much. If you're going to buy magnets online, at least look for something cheaper - you can get smaller rare earth magnets on ebay for like $4 shipped for a bunch of them.
http://cgi.ebay.com/Rare-Earth-Disc-...QQcmdZViewItem

Hacking them from a hard drive is much cheaper, if you can't get one from a friend, try a small computer repair place and see if they've got any junk drives destined for the trash. Just open up the drive (may involve drilling out some screws if you don't have fancy security bits to remove them), tear things apart enough to extract the plates with the magnets on them, and then separate the magnets from the plates. To do that, take a knife or metal scraper or similar, and gently tap it between the magnet and plate with a hammer, until they separate.

Hard drive magnets work great because when you stick two of them side by side they're about the right size to fit very well on the fan hub, so it's very easy to get them centered and you only need a small amount of tape or glue to make sure they stay in place.

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Old 11-16-2007, 06:24 PM   #8
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I took apart six hard drives. I have this huge stack of metal squiggly things with magnets adhered to them, but not a single one comes of the big metal piece and it's too big to use on the stirplate.

I went to a local hobby store and they had them so I got a handful.
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Old 11-16-2007, 07:38 PM   #9
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Hard drive. Purchased some magnets from http://www.sciplus.com, but they weren't strong enough.
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Old 11-20-2007, 06:30 AM   #10
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www.unitednuclear.com

not sure what you need but if it needs to be really powerfull they sell them here under general science.


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