... and so on hard material.The machine can engrave letters and relief designs. JD-6060 high quality 23.6X23.6 ... frequency spindle motor,which can ensure to work on hard material.Technical parameter: ModleJD6060Machine bodyCast iron or cast ... industry: architecture, Gilt membrane, electric machinery, High frequency mold, moulding on shoes, badge, embossed mould, biscuit, candy, chocolate mouldl ...