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sources for magnets
This is a discussion on sources for magnets within the Shop tips and tricks forums, part of the General Discussions category; If you open up a discarded hard drive, at the base of the swing arm are two small very powerful ...
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08-06-2008, 02:39 PM
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 sources for magnets
If you open up a discarded hard drive, at the base of the swing arm are two small very powerful rare earth magnets. If you let them click together they are hard to separate w/o a tool. Caution opening up a hard drive will almost surely ruin it for computer use. In old microwaves you can find a pair of nice ring magnets about 3" dia inside the klystron which looks like a tin can with fins on in usually mounted at the top and back. Pull the can apart to find the magnets. There is also a big high voltage cap usually at the back which looks like a flat tin bottle with terminals. I like to short this out first by putting a screwdriver across the terminals just in case its still holding a charge. I have never seen a spark but its a simple precaution.
__________________ Life is short. Eat dessert first. Salad can wait.  |
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08-06-2008, 03:07 PM
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Hey Maddog, Give these folks a try. I incorporate rare earth magnets in my wood-work to hold metal elements in place. Good selection, fast shipping, economical and no electrical shock risk! Amazing Magnets |
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08-06-2008, 04:44 PM
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| free magnets
Electronics repair shops regularly discard large loudspeakers that can't be re-coned. They have large dough-nut shaped ceramic type magnets that are quite powerful. You can remove the magnets with a screw or nut driver usually.
__________________ There are no larger fields than these.--------Henry David Thoreau |
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08-06-2008, 05:20 PM
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Sonicare electric toothbrushes have replacable heads. I take the wore out heads and pry off the two tiny,yet strong magnets off the bottom. They're great for holding notes on the steel shop door.
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08-06-2008, 05:37 PM
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I have a couple of speaker magnets on the inside wall (sheet metal) of my shop---they are growing "hair" on the outside as the wind blows ferrous dust around the building... One way to collect iron ore!
__________________ Thomas |
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11-26-2008, 09:33 PM
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| concerning magnet sources
A VERY cheap source for strong neodymium. (I have bought from them, and they are both reliable and fast.) eBay Store - magnets: wind turbine, flexible magnets windmill blades, rare earth magnet Neos (Neodymium rare earth) are really good, as a small fifty pound pull sucker (1" diameter by 1/2" grade N50 ) can be used at a distance to tell if steel has gone non-magnetic, without the hot steel being close enough to really damage the magnet. Just don't try to touch the steel to the magnet..... even with cold steel. These are POWERFULL.  No, I have no connection other than being a happy customer of theirs....  Paul Andrulis |
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