Re: [ATM] Argh! How do I fix this?

[GARY FUCHS <gary@rcn.com>]

How about increasing the bevel a bit and going back a couple of stages to 25µ or 40µ - sort of split the difference? It looks like the chips on the edge might be the deepest.

Gary Fuchs


---- Original message ----
>Date: Sat, 23 Feb 2008 14:01:28 -0500
>From: Dave and Connie <dmatt@frontiernet.net>  
>Subject: [ATM] Argh!  How do I fix this?  
>To: atm@atmlist.net
>
>I started the 9 micron WAO today.  After 2 wets the mirror surface has 
>already changed significantly.  I washed it and let it sit for an 
>hour.  Then I found a chipped area near the edge.  I must have banged it on 
>the tool but don't remember doing it.
>
>My finger nail catches in the dings.  I am guessing that I would have to go 
>back to 80 or 120 to take it out.  Not something that I want to do so I am 
>guessing that it will get masked out or ignored.
>
>The photo is at:
>http://www.nieuport11.com/img/ PICT0004.jpg shows the damage.
>
>Questions:
>1) Should I do something to prevent stress risers?  What?
>2) Is it a bad idea to ignore it?
>3) Will I have problems polishing if I do ignore it?
>
>Dave
>
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