Enhancement of surface quality in ultrasonic machining of glass using a sacrificing coating

► We fabricate the high precision glass holes in Ultrasonic Machining (USM). ► The hard wax coating is deposited on the glass substrate and then holes are precisely fabricated in the coated glass using USM. ► The wax coating is removed by a cleaning process after USM. ► The wax coating can protect the surface of the glass in USM.