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

[fundo@bellsouth.net]

From: Mark Holm <markholm@verizon.net>
>
> 
> 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?

If he keeps the lap nominally undersized, he shouldn't have a problem.  I have polished mirrors with much more severe chips than these.  I would carefully rebevel, under running water, and then continue.

*****-----
Dan F.
Memphis, TN

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