Re: [ATM] Polish then figure

[Michael Lindner <mikell@optonline.net>]

Francis J. O'Reilly wrote:
> Jim, I certainly understand your position, I respectfully disagree however. 
> The reason I do not even consider figuring the mirror until it is fully 
> polished is that the figure changes with every stroke.

I have to agree with this disagreement. Furthermore, during polishing 
the figure is changing as a result of polishing down high spots left 
from grinding, so the change in figure before you're polished out is not 
necessarily a good indicator of how the same stroke will behave once the 
mirror is fully polished.

-- 
Michael Lindner
http://www.starastronomy.org *** http://home.att.net/~mikel
http://www.atmsite.org *** http://www.atmlist.net
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