These magnets are out of an IBM 3360(?) disk drive. I have
three of them and the are VVVVVVVVVVVVVVVery strong. The
poles are across (side to side) and not end to end.
You don't want to get your fingers between two of them...

Dewayne Hill


>Hi all,
>
>Looking at Wondermagnets products I see item #16 as a
>mystery magnet....I can't envision what it was ever used for?
>
>http://www.wondermagnet.com/dev/magnet16.html
>
>I've seen these before and they are basically two thick sheets
>of ferrite glued together and (sometimes) painted.  Essentially
>they are 2 magnets together or using another phrase they are a
>4 pole magnet.  Although somewhat "U" shaped, with a
>semi-circular cut-out, the conflicting fields present problems
>with uses like seismic instruments.......they are way too big to
>handle anyway.  The center cutout offers no outstanding field
>as is.  Nothing is known of any accessory soft iron core
>material exactly.  Robert Lamb says he's seen them with a
>backing plate, and, with a plate that covers roughly the
>circumference of the hole with two magnets.
>
>They almost look like they were originally designed to go
>part way around a pipe (roughly 3.7" diameter).  Some kind of
>plumbing use?  Some kind of early day accelerator use?
>Dinosaur (cow) pill from swallowing magnetic metorites?
>OK.....OK....I get carried away....ha.
>
>Carry on with your computer glitches....
>
>Meredith Lamb
>
>
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Dewayne Hill (n0ssy)
Westminster, Colorado USA
39.83569n 105.0627w Elev. 5660ft.


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