Shay, what comes first to mind is to use a metal bonded diamond impregnated wheel. Gary Gary Hillman Service Support Specialties, Inc. 9 Mars Court PO Box 365 Montville, NJ 07045 973-263-0640 973-263-8888. -----Original Message----- From: Shay Kaplan [SMTP:shay@mizur.com] Sent: Tuesday, August 22, 2006 10:47 AM To: 'General MEMS discussion' Subject: [mems-talk] Dicing sapphire Hi everyone, I'm trying to cut sapphire wafers, ~300u thick, and I experience a very high blade ware - microns per cm cut. I'm using resin blades with ~45u size diamond and progressive cutting. Anyone has any experience with sapphire dicing? What blades, spindle speed and table speed should one use? Thanks Shay