Precision water milling is a high-precision machining method with the following advantages: 1. High precision: Precision water milling can achieve very high machining accuracy, which can meet the machining requirements of workpieces with extremely high dimensions, shapes, and surface quality requirements. 2. Good flatness: Through water grinding, the surface of the workpiece can achieve good flatness, which can meet the machining needs of workpieces with high surface flatness requirements. 3. Good surface quality: Precision water grinding can achieve very good surface quality, which can achieve workpiece processing with high requirements for brightness and smoothness. 4. Wide applicability: Precision water grinding is suitable for processing various materials, including metals, ceramics, glass, etc., and can meet the processing needs of different materials. 5. High processing efficiency: Precision water milling has high processing efficiency, which can achieve efficient processing of large workpieces and improve production efficiency. 6. Environmental protection and energy conservation: Compared to traditional mechanical processing methods, precision large water grinding consumes less energy and causes less environmental pollution, which has good environmental performance. In summary, precision water grinding has the advantages of high precision, good flatness, good surface quality, wide applicability, high processing efficiency, and environmental protection and energy conservation, and is widely used in various fields of workpiece processing.