Re: [ATM] Making an exisiting mirror thinner

[William Marriott <bmarriott@pacbell.net>]

So, can we assume that you are talking about a 12.5"?
Two options

1) Grind down the back.  Since it would take forever
to do this manually, you would need to find someone
with a Blanchard rotary grinder to do this, and it
would still take a long time, Newport would probably
be able to do this, maybe 2 hours shop time.

2) As Dominic noted, some way to cut it off, then
grind the back flat.  Very time consuming.

#1 I believe would definitely require refiguring of
your glass, as even if properly annealed, with that
much glass coming off, I would expect the figure to
'spring'

#2 might be less stressfull, but still with that much
material being cut off, I would think it would still
spring.

But, in the world of optics, you never know....

Bill Marriott
http://VAoptical.com
http://StarlightOptical.com
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