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Re: [ATM] Plop to Calculate Warped Mirror ?
Another point to take into consideration:
Even if your miror is perfect, it could deform by the temperature diffrence
between its 2 faces in case of a thin, open miror.
See the mail I've sent 1 hour ago (answer to T.Krajci about "ball bearing
for triangle")
----- Original Message -----
From: "Jerry B. Hillman" <JBHillman@ev1.net>
To: "matt" <mariusrf@bellsouth.net>; "Mark Holm" <mdholm@telerama.com>
Cc: <atm@atmlist.net>
Sent: Tuesday, August 31, 2004 1:36 AM
Subject: Re: [ATM] Plop to Calculate Warped Mirror ?
> Hi Matt,
> I hope you have made a lot of mirrors, and at least several thin mirrors.
> 1/2" x 18" - Not worth the effort IMHO. You can make several thicker
> mirrors in the same length of time with far less frustration.
> Of course, I failed at my 16.5" x 3/4" attempt and wasted 15 months in the
> process. Maybe you'll have better luck. Support isn't the only obstacle
> you'll have to deal with. 1/2" glass that large is FLIMSY. It is going to
be
> difficult to polish and figure without errors in the figure due to flex of
> the glass.
> Clear skies, Jerry
>
>
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