stone engraving machine working area1300x2500mm CE 3kw constant power spindle all square guide rail,stepper motor DSP stone engraving machineApplicable ... spindle, 24,000rpmDrive motors stepperWorking delicacy 0.005mmRepositioning accuracy 0.025mmComputer interface USB 2.0Collet 3.175mm, 4mm, 6mmSoftware ... ,Artengraver2009 Software/Type3 software,20cutters (φ3.175,φ6), 2collets Sample