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I was wondering what medium most people out there used for embedding 
magnets in.  Specifically, I want to have neodymium (rare earth) magnets 
pull  items around on the opposite side of a pane of tempered glass &/or 
acrylic.  So I was going to imbed the magnets in a casting of a urethane, 
epoxy or some style plastic cast that would allow its use but wouldn't 
scratch up the glass.  (You might think of the typical flow tunnel 
magnets).  So...what casting mediums have people out there used with 
success for this endeavor.  Information on where to get your favorite 
mediums would be appreciated as well.

-William

William Katzman			[log in to unmask]
Director of Exhibits			(828) 322-8169 x307
Catawba Science Center		(828) 322-1585 (fax)
"Try not to become a man of success, but rather to become a man of value" 
-A. Einstein

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