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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
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Removing nital etch stains




I would like to get a recommended process for polishing out nital etch stains on 9310 steel to get a bright finish. Does anyone have a proven process that results in a bright finish, but does not produce any surface flaws.

Jon Bies
- Springvill, Ut
August 24, 2009



Progressively smaller size grit, Aluminum oxide would work fine and diamond costs more, but lasts longer.
I would start with 5 micron aluminum oxide and then go finer with each step.

James Watts
- Navarre, Florida
August 28, 2009




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