[ATM] Question on my lap for 8" F6

[atmpob at yahoo.com (Dale Eason)]

After trying the center deepening stroke you may not
have waited long enough for the mirror to cool.  The
center will be higher because it will be warmer from
the work done on it.  Make sure to wait at least an
hour before testing. Especially if it is plate glass. 


Dale Eason

--- Scotto1234@aol.com wrote:
> It's the only thing that makes sense, and I have
> considered it, but the 
> numbers get larger as the carriage moves backwards. 
> I turn the screw (not left 
> hand thread) that moves the carriage forward and
> backward, CCW to move the 
> carriage away from the mirror.  This results in
> higher numbers on my dial indicator. 
>  To confirm it, as I go from Inside focus moving
> away from the mirror, the 
> edge zone is the first to null, and the center is
> the last.  I to expected a 
> huge hole in the middle of my mirror from what I was
> doing, but that is not what 
> I am seeing.  Am I not seeing the forest for the
> trees?
> 
> Scott
> 
> 
> 
> 
> In a message dated 2/29/2004 7:26:25 AM Eastern
> Standard Time, 
> wa4guu@verizon.net writes:
> I can't help but suspect that your tester actually
> shows larger
> numbers closer to the mirror. I know you are in the
> presence of your tester
> and I am not. But if you did the stroke as to hog
> the middle as you describe
> and it "appears" to have made center's radius even
> longer, it would be well
> worthwhile to consider. If it were me and my tester
> I would have to recheck
> that I knew which way the numbers go when I move the
> tester forward and
> back. It is very unlikely that the tangential
> strokes would not have made an
> ugly hole in the center.
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> ATM mailing list http://www.atmlist.net/


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