Re: [ATM] 40" mirror

[Dale Eason <atmpob@yahoo.com>]

Jerry,

You will discover a good bit about this and other
issues related to big glass by looking at the Yahoo
Group bigdob.  There was such a discussion along with
some real world examples in the last few weeks.

Dale Eason

--- "Jerry B. Hillman" <JBHillman@ev1.net> wrote:

> Hi Jeff,
> 
> >Also consider a thinner mirror.   Four inches of
> glass will almost never
> >come to equilibrium.
> 
> I thought that is why pyrex is the substrate of
> choice.  Low thermal
> expansion co-effcient.
> 
> Clear skies, Jerry
> 
> 
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
> 



		
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