John,
As you adventure to ever more powerful magnets, I would like to share my magnet
experiences with you. I have used the ultra powerful Neodymium magnets in my
work in determining the exit times of military high speed cannon projectiles
for several years now.
I have enough blood blisters from having these magnets snap together by
inadvertently holding them within an inch of each other. They will shatter
each other if allowed to impact one against another. This impact force would
be sufficient to shatter the glass being used as the support structure for the
sundial if not carefully applied. This could ruin many manhours of work if the
supporting glass structure is broken.
Neodymium magnets are in a world all onto their own.
Art Krenzel
45.828N 122.565W
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