From: Opticalparts{at}aol.com
To: georgea{at}cam.org, atm{at}shore.net
Reply-To: Opticalparts{at}aol.com


Hi George,
Alumina polishing powder 0.3microns will polish your aluminum and take care
of the black.
Good luck,
Peter Nance, Jr.
Precision Applied Products
opticalparts{at}aol.com

In a message dated 3/14/2003 1:00:07 AM Pacific Standard Time,
georgea{at}cam.org writes:

<< A question for the metalworking guru's on the list.
 I am currently in the process of polishing (or attempting to) an
 aluminum mirror (it is an experiment/fetish) with cerium oxide.
 The surface is a smoother than with the 10micron grit when I finished
 grinding, BUT the surface of the aluminum is getting blacker each time I
 polish. Is this a case of it is always darkest just before dawn, or does
 cerium oxide react with aluminum? Is there a better polish for aluminum?

 George Anderson
 Montreal Canada

 Clear skies and good health >>

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