Abstract: A plurality of parallel adjacent grooves are formed in at least one surface of a sheet of glass. Each of the multiple grooves has a maximum width dimension of 7 millimeters and a minimum angle between the grooved wall and the plane of the glass surface of 12.degree.. The grooves are formed by affixing the sheet of glass to the conveyor of a grinding machine and subjecting the glass sheet to one or more grinding wheels in which the surface thereof has a plurality of parallel adjacent grooves formed therein of the mirror image of the grooves to be formed in the glass, wherein the grooves are simultaneously cut in a single path.