IIRC the "Curie Point" of a material  is the temp at which ferromagnetic
properties go away...

Jack

On 4/3/08, Mike Hord <mike.hord@gmail.com> wrote:
> >  3) Finally, are there any kits/plans available to build your own ...  or
> >  does someone have one they built which works?  And perhaps related -
> >  let's assume I build one, does anyone have an idea of the inductance
> >  and/or DC resistance I would need to not pop the breaker and/or cause
> >  glowing wire?   Let's assume US 120V 60Hz.
>
> Just a thought and I've never tried it, but what about heating the tool, or
> impact?
>
> I know that sufficient heating, or a good stiff blow (say a 10 foot fall to
> a
> concrete floor) can ruin a perfectly good permanent magnet.  Could the
> same thing apply here?
>
> I seem to recall the junior high science demonstration involving an iron
> magnet placed on a stove burner or similar.  Not glowing hot, but pretty
> darn warm.
>
> Mike H.
> --
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist