... rotary axis 4.Hiwin linear square guideway 5.DSP offline Stone CNC Engraving Machine ZK-9015 Application1.Suitable for natural marble, granite, bluestone, sandstone ... doing 3D embossment, and line engraving, bevelling, drilling 2D engraving.2.Such as granite stone can be layered engraving to 3mm3. Marble, bluestone can ...