polishing/grinding ceramic tile edges [Archive] - Ceramic ...
#60 grit is the best for stock removal, and #200 and #400 grit is best for polishing (even on alumina ceramic). The Gold series #60 are best for removing epoxy glue off alumina ceramic tiles. The UDT Gold Line are a Hybrid Flap Disc with extreme grinding and an incredible life time, and very suitable for the straight stone edge.