See the Gemini Carving Duplicator in action in this shorted video of a solid body guitar duplication. This video gives a brief overview from start to finish, showing the the major points of carving with the Gemini duplicator.
Notice the brake action at the operator's right hand. This brake is a unique and indisensible feature of the Gemini. It allows the carver to cut in straight paths from side to side while still following the topography of the pattern piece. Notice also the large, solid framing and smooth motion of the arms.