Re: [ATM] quality suffering

["Glenn Forney" <glenn.forney@nist.gov>]

How about a scratch caused by a bit of glass broken off from a mirror edge
not chamfered enough?  That is what happened to me anyway.  I had not
chamfered the edge of my mirror enough - I actually heard the noice of the
broken glass scratching my mirror.  Being inexperienced, I didn't notice the
scratches until a couple of grits later.  The scratches being described
(long narrow and deep) sound like mine!

I continued on, it was a learning experience plus it was pointed out that
the spider is equivalent to two large scratches in the mirror.
glenn

-- 
Glenn Forney
National Institute of Standards and Technology
100 Bureau Drive, Stop 8663
Gaithersburg MD 20899-8663

Telephone: (301) 975 2313
FAX:       (301) 975 4052

----- Original Message ----- 
> Message: 2
> Date: Mon, 22 Mar 2004 11:51:38 -0800
> From: "Bob May" <bobmay@nethere.com>
> Subject: Re: [ATM] quality suffering
> To: "atml" <atm@atmlist.net>
> Message-ID: <002601c41047$172c05e0$9b873f42@p120>
>
> Possibly a ding from an unknown hit on the mirror surface.  You may want
to
> check stress in the surface to see if there is any, especially in that
area.
> Bob May
> http://nav.to/bobmay
> bobmay@nethere.com
> NEW! http://bobmay.astronomy.net
>
>


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