[TheForge]magnet Q.

[Roger Olsen]

Hey Andy,

Ask your friend one other thing about magnets.  I wonder about heat, at what
point does it drain a magnet of its magic affects?   I have never used them on
fire doors but I know many have.  I have considered using them in the past and
I am sure I will again in the future.

If I did I would use the 'Rare Earth Magnets' sold by Lee Valley and others as
well.  They seem to be about 10 times stronger than the radio shack type
magnets.

Roger Olsen
__________________________________

Gladish Family wrote:

> > 1. I have a number of assorted magnets used for set-ups, mock ups and
> > the like...should they be stored separately, carefully aligned
> > north/south, to retain max  pull ( suck?) or is it not a problem just to
> > toss them in a box with their friends?
>
> My understanding is that magnets are manufactured by applying overwhelming
> magnetic fields (i.e. really really huge!) to a previously neutral chunk of
> metal, and that heat or overwhelming magnetic force are the only ways that
> magnets lose their pull, other than physical deterioration.
> I have a friend who sells magnets for a living- I'll ask him.
> Andy G.
>
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