Always keep magnets away from credit cards, wind-up watches, laptop harddrives, etc. I've erased several credit cards by accidentally passing an NIB magnet near my pocket, or letting one fall into my lap. This article is from 1995, so I should probably still warn against floppy disks and VHS tapes...
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Always keep magnets away from credit cards, wind-up watches, laptop harddrives etc. I've erased several credit cards by accidentally passing an NIB magnet near my pocket, or letting one fall into my lap. This article is from 1995, so I should probably warn against floppy disks, VHS tapes, and non-monochrome video displays. DANGER, DANGER, NEO MAGS CAN MAKE YOUR AUDIO CASETTE TAPES SOUND MUDDY, since they erase the "highs" less than the bass. And if you have an expensive neo the size of a hockey-puck, you can ruin someone's entire 8-track tape collection in a few moments. Stick it in yr back pocket and wave yr butt around.
WHERE TO GET 'EMMany inexpensive NIB magnets from WONDERMAGNET, go here to order. (an EXCELLENT source!)
For tiny spheres and huge slabs, try Mr. George Magnets
has supermagnets & toys
Magnets 4 Less, disks, cylinders, blocks, very low price
Neoworld, small spheres, blocks
All Electronics, lots of misc sizes
bismuth cheap (no magnets), http://www.rotometals.com/Bismuth-s/4.htm
KJ Magnetics, magnets, sculpture kits.
Scitoys, magnets, floating graphite
DuraMag, http://www.duramag.com/rawmat/neosizes.htm, large inexpensive disks and blocks
Herbach & Rademan (mail order surplus) 800-848-8001 ($25 minimum purch)
Arbor Scientific, Ann Arbor, MI, 1-800-367-6695 http://www.arborsci.com
Lee Valley Tools http://www.leevalley.com
Tridus International, 310-408-2222, Paramount, CA (VERY low prices, but
$250 minimum. Ask for MgOe:30 neodymium, its plenty strong but not
Master Magnetics ???
Magnet Sales Inc., 1-800-421-6692,
Magnets Are Us Inc
Surplus suppliers: many mailorder suppliers carry 1" trapezoidal NIB
Or as Mike H. suggests, find old hard-disk drives and tear 'em apart to
get those magnets for free! NIB magnets are used in the head-positioning
linear motor. They are arc-shaped and flat, stack them for extra