I've been cutting glass plates and mirrors with my CNC milling machine machine for years. In this video, I describe a few tips and the general technique that I use. Clamping the glass plate to the table is the critical part of the process, and so I built a jig that allows the glass to be held laterally with shims, but does not require a high clamping force, which would crack the glass. Cutting parameters: .085" dia diamond burr 3000 RPM 1-3 inches per minute feed Cut depth .130" (full material thickness) Flood coolant with soluble oil cutting fluid http://benkrasnow.blogspot.com/2011/08/cnc-milling-glass-plates-and-mirrors.html http://benkrasnow.blogspot.com/2008/08/cnc-milling-glass-plates-and-mirrors.html