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RE: ATM early first light
Hi Les,
> While hogging out my mirror today I saw sparks between the tile
and the mirror.
I've been there. I think it's because the tool was too dry. Add some
more water, but don't add too much water because the abbrasives would be
swept away from the tool before it grinds the mirror.
Good luck,
Bob P. Sumitro
Jakarta, Indonesia
visit my still-under-construction astronomy and telescope making page:
http://www.geocities.com/CapeCanaveral/Hall/2670/