degausser

[Technomage]

giving folks ideas about thermite? :)

in all seriousness though, you can get a bulk tape eraser from radio 
shack for about $29.00.
its worth the money and won't burn your place down either.

Matt Graham wrote:
>
> That'd work, probably, but what might be easier/cheaper is a big NdFeB magnet 
> ("rare earth magnet") run at close range over the floppies in a couple of 
> directions.  I think they sell these at various stores in the Phoenix area, 
> or you can get them at http://www.amazingmagnets.com/ --the pens they sell 
> with magnets attached are quite convenient, though those wouldn't be great 
> for erasing floppies.
>
> If you *really* want to get serious about this, powdered aluminum, iron(III) 
> oxide, some KMnO4, and a magnesium fuse.  Pile on top of floppies.  Ignite.  
> Completely scrambled ferromagnetic domains, and a show to boot!  (Don't do 
> this unless you know what you're doing, eh?)
>
>