ATM 3/4" Plate glass .. the Max..

["Russell Jocoy" <russjocoy@hotmail.com>]

("atm@shore.net")

    O.K. guys I respect all of you input on how far someone can go with  
3/4" plate glass when making
a mirror. It seems that if you try a 16" diameter mirror this thin you are 
doing a "hat trick". I understand
that support is all important, and that the demon astig.. is always 
looming.. I haven't heard from Mel, the
master of thin mirrors?  Is it even possible to make a mirror this size with 
a diameter of only 3/4"???
       Richard says , yes only if you slump the blank in a kiln. I have 
another question , once you slump
the curve, how do you support the bottom of the mirror when grinding since 
it will be concave??
     If I go through all this process why can't I just pitch block two 3/4" 
blanks together and work on this
combo until figured and then separate and support??  Just a thought...
                    You see I really want a 16" mirror and I may be pushing 
the envelope with what I have so
any input is apreciated and taken as well. Thank you all for your input and 
advice....
                              Oh , I do have some x-tra 3/4" plate glass... 
Thanks again

                                                                             
                                         RUSS JOCOY
("atm@shore.net")




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