Ductile mode cutting of optical glass without silicon oxide composition

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Cutting optical glass bears the problem of severe tool wear, as a result, a stable cutting process is difficult to achieve. Since most optical glasses are composed of silicon oxide, the severe diamond tool wear during glass cutting might be caused by the chemical reaction between silicon oxide and diamond. Thus, reducing the silicon oxide composition might be helpful for glass cutting. This study demonstrates that by using an optical glass without silicon oxide composition as workpiece and using suitable tool geometry, tool wear is greatly reduced and glass can be cut in a ductile mode for a long cutting distance.