Re: ATM 16" blank thickness extended question

["Thomas A. Moulton" <w2vy@xanthus.net>]

I can hear it now...

"6:1 Ratios Oh Yea I remember them, those were used Last Century!
You can go that thick if you want to make a replica of an old 90's
instrument"

----- Original Message -----
From: David McCarter <mccarterd@claven.fanshawec.on.ca>
To: <atm@shore.net>
Sent: Friday, April 07, 2000 5:43 PM
Subject: Re: ATM 16" blank thickness extended question


>
> >(Based on that alone, maybe we should label 1:6 thickness
> >ratio mirrors as "excessively thick."  ;-)
>
> I think there is great merit to this idea. As has been said here many
> times, I know how to support a thin mirror, but I don't know how to
quickly
> cool a thick one. Certainly no reason, given some care in polishing and
> testing, that 1:10 to 1:14 mirrors shouldn't have a great figure.
>
> Dave

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