Marble cutting&engraving cnc router 1 Seamless weld steel structure 2 Hiwin square guide 3 ... linear orbit, two line sliding track, heavy loading, stable working, high precision, longlife time2. Whole seamless weld steel structure, not easy ... least.3. Constant power spindle and motor, strong cutting capacity, high efficiency,Well compatibility, compatible software CAD/CAM, such as Type3, Artcam ...