Re: [ATM] The mouse in the mirror

["Bob May" <rmay@nethere.com>]

It's interesting that some laps squeel like stuck pigs  while
others from the same batch of pitch never make a sound.  Some
laps are like moving trucks around while others are more like
picking up a bike and tossing it in a corener.  Squeelers usually
quiet down when they get finbished polishing out the glass but
you never know.
As to cerium oxxide mixes, the thing here is that you don't want
to have so much CeO on the lap/mirror that the lap glides over
the mirror.  Thin mixes do tend to keep the lap from saturating
with the cerium ut also end up not working as fast as they could.
The pros use a thin mix and pour it over the work constantly so
that the interface is fully covered with the thin mix and that
alows the pitch to take up the cerium as necessary for the job.
FWIW, I've had little mirrors that I could hardly move the la0p
on, the force needed was so high and otyhers that were always
easy to move. So far, I haen't found any real rhyme or reason for
the difference in laps.  Even saturating the hard to move lap
really didn't make it any easier to move and the problem wasn't
with an odd shape as the polish came on evenly over the surface.
Bob May
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