... CNC Router with Multi Rotary/ Automatic Engraving 2. Patented and new production. 3. Multi-dimensional for cylinder 4-axis 3D Rotary ... lead transmission, high precision and long life.6.Taiwan imported linear guide, double rows and four lines of ball sliders, ... 4D processing, can be fast, smooth four-dimensional machining, engraving and cutting. And could operate after accident or next day processing so ...