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Unread 11-24-2002, 01:44 PM   #11
redleader
Thermophile
 
Join Date: Jun 2001
Location: The deserts of Tucson, Az
Posts: 1,264
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Copper is very soft stuff. In order to make those channels Cu, they'd have to be very thick. By using brass they can make them much thinner. This means more airflow and thless material between the air and water.
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