From: George Anderson 
To: atm 
Reply-To: George Anderson 


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

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