Re: [ATM] turned edge vs over correction

["James Mulherin" <jcmulherin@opticalmechanics.com>]

David:

> I can tell you I have turned every edge I have worked on, some worse than
> others.  I can usually gain some of it back, if not correct it completely,
> with tool on top, or with short strokes on a hard lap.  I suspect I turn
> my edges because I do not put a decent enough bevel on the edge of the
> mirror.
> 
> That and I get excited and stroke long, or too fast.  I start pushing on
> the near or far edge as I stroke and astigmatise the glass as well as turn
> the edge.
> 
> Some day, as god is my witness, some day I will do a decent mirror!

It's not the width of your bevel. Patience and concentration are the keys. I
have the same problem. I just don't have the patience to work a mirror by
hand anymore. Don't think I ever did :-)

James

James Mulherin
Optical Mechanics, Inc.
jcmulherin@opticalmechanics.com
www.opticalmechanics.com
Tel: (319) 351-3960
Fax: (319) 351-3943

> 
> David Davis
> Toledo, Oregon 97391
> 
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