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

["Jerry" <wa4guu@verizon.net>]

More opinion...

If the clamshells were larger it might be worthy of more concern. 

But in this case, those little dingle-berries will be shaved off the first
time they pass off the edge of the mirror and back. That couldn't take
longer than two strokes or three strokes.

There would be a higher chance of getting a scratch by separating the disks.
To trim off an inconsequential bump. The more you separate them the more
chance something gets between them that will scratch the mirror.

Big dings in the mirror and resulting big bumps on the lap might be worthy
of the exacto knife. 

Wait until you actually see that it is causing a problem before fixing it.
If you can't see a defect in the mirror surface caused by a bump in the lap
there is no problem. You have several hours of polishing to do. You will be
able see if it really matters and there is no chance that it is going to do
anything to the mirror so severe that can't be fixed in figuring.

Jerry



-----Original Message-----
From: atm-bounces@atmlist.net [mailto:atm-bounces@atmlist.net] On Behalf Of
Dave and Connie
Sent: Saturday, February 23, 2008 9:21 PM
To: Mark Holm; atm@atmlist.net
Subject: Re: [ATM] Argh! How do I fix this?

I was thinking about that too.  My conclusion was that I could use an Xacto 
knife to pick off the pimple and ignore the small hole that it left.  It is 
certainly a lot smaller than a channel.

Dave


At 06:28 PM 2/23/2008, Mark Holm wrote:


>I've got a question.
>
>Say Dave ignores the chips, finishes 9 micron and goes to polishing.  When 
>he presses his lap, the chips will leave high
>spots on the lap.  Not large of course, but there all the same.  These 
>will cause accentuated local pressure.  For long
>polishing spells, they will get worn down and the effect won't be large, 
>but during figuring, with short spells, the
>effect may be roughness and a tendency toward turned edge.
>
>Anybody think I am, at least in principle, correct?
>
>--
>Mark Holm
>markholm@verizon.net
>
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>ATM mailing list http://www.atmlist.net/
>
>
>
>--

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