[ATM] Tell me about scratches

["Rich Ball" <ShooterBall@hotmail.com>]

Alas, now three hours into polishing my 8" f4.5 Pyrex mirror I find a couple
scratches.  One is not deep enough to feel with a fingernail.  One is.  It's
about 1/4" long.

It's all about pride I suppose. They won't damage the image.  But here's the
problem.  I'd go back to fine grinding and take them out.  I saved the tool
and made new concrete pitch-lap base.   But how do I protect against more
scratches?  I have taken what I thought to be reasonable care.

I'd like to hear from some glass pushers who manage to get through polishing
and figuring without these annoying and pride-damping intrusions.  What do
you do to guard against them?  Is it possible to avoid them without access
to an industrial clean room?

Rich Ball
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