... DSP offline Stone CNC Engraving Machine ZK-9015 Application1.Suitable for natural marble, granite, bluestone, sandstone, artifical stone, ... cambered surface, sphere, stainless steel, iron, copper, aluminium, titanium alloy, can doing 3D embossment, and line engraving, bevelling, drilling 2D ... high rigidity, bearing strength better2.Dual motor driver for Y-axis, moving stably.3.Good software compatibility, ...