The machines consist of a single focused laser beam which moves in the a few axis, up, down and across. It has a fastened focal duration. The electrical power is at the end of the laser beam which is what helps make the millions of very small fractures inside the glass reproducing 3D designs, logos and even photographs. The laser passes via the surface area of the glass, leaving it untouched, to engrave inside of at the laser beam’s focal point. Through programming we can figure out the depth or thickness of the engraving and its situation inside of the glass, close to the back or entrance or in the center.