... Control and DriveSpeedy DSP controlling, stepper motorMax Engraving Speed1200mm/sMax Cutting Speed500mm/sRepeating Location±0. ... Red-light position DSP Off-line operation with usb flash Applicable materials: wood, bamboo, jade, marble, organic ... glass, crystal, plastic, garments, paper, leather, rubber, ceramic, glass and other nonmetal materials. marble tombstone laser engraving stone