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Re: [ATM] BVC
Hi,
I did a 14 inch BVC mirror without trouble. But I prefer Pyrex or
Borofloat anyway. Borofloat is a borosilicate like Pyrex, but it is cast
like float glass. Its homogenous and proved to be without stress. The
only drawback is that it is only available as thick as 25 mm. Since we
have problems to get suitable blanks here in Germany some guys developed
making big mirrors out of that thin blanks. As I know there are some 22
inch mirrors on the way and I have no doubt that they get ready and fine.
CS Marty
--
"Mit der Einführung der Planung ersetzt man den Zufall durch den Irrtum"! (Peter Ustinov)
("By planing you replace hazard by error" Peter Ustinov)
Homepage: marty.t.bei.t-online.de
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