... , and no dust pollution.3. good machining quality, high fine finish, suitable for machining various mold cavity with high precision.4 ... . Removing the burrs from castings, forgings and the welding spatters2. Finish machining of wide variety of metal mold.3. Polishing and ... . Chamfering, circular bead or groove on the machinery parts.5. Finish machining of wide variety of machinery parts of die cavities ...