Re: [ATM] polish time for 13 inch

["Norm Prince" <princenorman@bellsouth.net>]

Gosh...I love all these questions!!!...good discussion for us newbs...

-norm-


----- Original Message ----- 
From: "David Steinhauer" <desteinhauer@verizon.net>
To: <atm@atmlist.net>
Sent: Thursday, July 19, 2007 18:26 PM
Subject: [ATM] polish time for 13 inch


> Mel,
> 
> I'm interested in this oversized lap concept, since I
> had to fight a turned down edge so much on my first
> mirror.  This is very different from what I'm used to
> reading about.  I had to spend much time pressing
> my mirror to avoid the return of the dreaded TDE.
> 
> I take it when you press the lap into contact with the
> mirror in motion, you have the mirror on top. Is that
> correct?  How much pressure do you apply (with a 12
> inch mirror, for example)?  What kind of stroke do you
> use when you are pressing (not figuring)?
> 
> When you are figuring with an oversized lap, how do you
> avoid changing the figure too much while you press the
> mirror with it moving?
> 
> Is it possible to use the traditional wide-W parabolization
> strokes with an oversized lap, or do you have to
> preferentially microfacet the surface like you describe?
> 
> Thanks,
> David Steinhauer
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
>

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