From: "Russell Jocoy" 
To: dudgeon{at}hawaii.edu, ATM{at}shore.net
Reply-To: "Russell Jocoy" 






>From: John Vede Dudgeon 
>Reply-To: John Vede Dudgeon 
>To: ATM{at}shore.net
>Subject: Re: ATM Too big, too thin?
>Date: Tue, 25 Feb 2003 20:54:57 -1000
>
>
>Regarding big vs. thin constraints, what would you say about a 1/2"
>thick, 10" f8 primary? I acquired a 1/2" plate glass kitchen table
>broken in two, and started thinking about the thinnest flexed mirror
>one could make at that size. FLEX says it would perform very well, but
>I thought I'd ask the list about ease of generating a sphere in 1/2"
>[hopefully] untempered glass.
>
>John
>
>
>
>
("atm{at}shore.net")


     John, go for it.. If the 1/2" plate glass table top broke in half and
cracked it is most likely not
tempered glass. If it would have been tempered you would have already
sweeped up all the
tiny pieces and put them in the garbage.  I am now working on two mirrors
of 5/8" thick plate
glass, one 9" and one 10". I don't plan on flexing these.  Hey ,
you have the glass, go to Richard's
website and see how to round a blank and start grinding. Richard can even
slump the glass for you.
                  RUSS JOCOY
("atm{at}shore.net")

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