Re: [ATM] thin but workable

[Mike Lockwood <melockwo@uiuc.edu>]

Tony,

Tony Gondola wrote:
> With all this talk of ultra thin mirrors does anyone have guidelines for 
> just how thin you can go without resorting to unusual support systems 
> and grinding/polishing systems? I'm specifically interested in the 12.5" 
> diameter case in pyrex.

If you want a high quality mirror, 3/4" edge thickness is enough in 
that size, but the work must be done carefully.

Brute-force work will not agree with that blank, but carefully applied 
gentle work can produce a superb mirror.

	Mike Lockwood

_______________________________________________
ATM mailing list http://www.atmlist.net/