"David Laight" <David.Laight@btinternet.com>  wrote:
 > Take it apart, there are a pair of magnets in there that will do all the
 > tricks you were told magnets could do when you were little - but never
 > had one strong enough....
 > Demonstrating eddy currents with an Aluminium block is odd...

There's a certain amount of amusement in sticking a telephone book
on the fridge door.  But this trick requires magnets from an older
full-height 5.25" 8-platter drive like a Maxtor 8760...