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

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Polishing media of corundum al203 in tumbler or vibrator

ANY ONE TELL TO ME HOW THE CORUNDUM (AL203) (SYNTHETIC JEWELS IN WATCHES)(TRANSPARENT RED COLOR) (HARDNESS NO 9 IN MOH'S SCALE) (BALL OR SEMI SPHERE SHAPE) WILL POLISH IN TUMBLING MACHINE OR VIBRATING MACHINE? WHAT KIND OF POLISHING MEDIA IS USED? (THIS MATERIAL IS ALREADY GO TO PREPOLISH STAGE AND SHAPE BY SILCON CARBIDE)
THANKING U

PRABAKARAN
PROPRIETOR - INDIA
January 18, 2008

If you are looking for a bright finish, steel, S.S., or porcelain will produce good looking finishes in a mass finishing system, also you need a good liquid compound. This is called burnishing. If you use treated dry organic materials such as wood, corn cob, or shell media this will produce a smoother polished finish in a much longer time cycle. Machinery, hardness and the size of the part and media will effect the time cycle.

AF Kenton
retired business owner - Hatboro, Pennsylvania
January 19, 2008

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