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Unread 09-22-2001, 05:55 PM   #27
redleader
Thermophile
 
Join Date: Jun 2001
Location: The deserts of Tucson, Az
Posts: 1,264
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Want me to email that engineer and ask? He had recommended I get Permalloy foil from McMaster and wrap it around the pump in a close to a sphere as I could.

If thats not an option Iron should work pretty well. Its got about 5 the reluctance of permalloy IIRC, but its easier to get. Cu and steel are about the same as air, I'm not sure about Aluminium.
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