Re: [ATM] Tell me about scratches

[Michael Lindner <mikell@optonline.net>]

On Monday 22 November 2004 01:20 pm, Rich Ball wrote:
> I'd like to hear from some glass pushers who manage to get through
> polishing and figuring without these annoying and pride-damping intrusions.

Keep everything covered as much as possible (lap, tools, mirror, etc.) when 
not in use. Let any water you use sit around for a while, or use bottled (I 
have quite a bit of rust in my tap water). When you apply cerox mixture to 
the glass, run your (impeccably clean) fingers through it to make sure there 
are no clumps. Wear clean clothes, and a short sleeve shirt. Wash your hands 
often. Be mindful to use cleanthing to wipe the mirror off.

The fact that you only got a couple of scratches means it was likely either a 
clump of polishing agent that broke up almost immediately when you began to 
polish, or something you wiped the mirror with after wards. If the lap or 
polishing compound itself were contaminated, there would be many many 
scratches. Look at the position and length of the scratches and try to guess 
what you did that might have dragged along some material to produce it.

Finally, rejoice in the fact that you had only 3 hours of polishing in. The 
most agonizing thing is to be the in last session of figuring, after many 
many hours of work!

Clear skies.
-- 
Michael Lindner
http://www.starastronomy.org *** http://home.att.net/~mikel
http://www.atmsite.org *** http://www.atmlist.net

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