... 3.DSP controlling DM-1121L marble Laser engraverMarble Laser engraving machineDM-1121L marble laser engraving parameter,1. Laser tube, 60w2. Working area, ... worktable,3).Red light pointer, the unit makes the laser path visible4).USB port, the unit that makes ... 3. Applicabe materialAcryl, Perspex, glass, wood, stone, marble, gravestone, rubber, leather, fabric, paper, cloth, dual-color boards, and so on ...