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[ATM] hex mirrors

To: atm@atmlist.net
Subject: [ATM] hex mirrors
From: horace r davis <hrd9@juno.com>
Date: Sun, 4 Nov 2007 19:46:15 -0500
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plan to cast a hex mirror the kiln I have will do a 20 inch and has a
working temp of 2300 F ?
what would be the ideal surface thickness, and web height, for a light
weight mirror and should it line up with a flotation device and how many
point cell should it be  if this works I can get a kiln that would do 25
inch mirrors
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