Re: [ATM] mirror dd amage

["Greg Jones" <gregj888@comcast.net>]

Richard, I think I missed something...  and your blanks must be a lot
thinner than mine:-)

Greg
----- Original Message ----- 
From: "Richard Schwartz" <richas@earthlink.net>
To: <gregj888@comcast.net>; <atm@atmlist.net>
Sent: Wednesday, June 08, 2005 9:24 PM
Subject: RE: [ATM] mirror dd amage


> Keep in mind that if you have enough bevel, the BACK of the mirror
acquires
> a 45 degree sharp edge, and that must also be beveled.  And when you bevel
> off the sharp edge on the back,you have a 45 degree sharp edge on the
front
> again.   After a few such cycles, you end up with a much smaller conical
> mirror blank with zero aperture.
>

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