Shenzhen Alu Rapid Prototype Precision Co., Ltd. Industry News Home News When to Use CNC Milling Services Complex Geometries: For parts with intricate features like slots, threads, or curved surfaces.High Precision: When tolerances are critical (e.g., ±0.01 mm for aerospace components).Durable Materials: For metals or engineering-grade plastics requiring strength.Prototyping to Production: Suitable for one-off prototypes or small-to-medium batch runs.LimitationsMaterial Waste: Subtractive process generates scrap, unlike additive manufacturing (e.g., 3D printing).Cost: Higher setup costs for small runs compared to 3D printing or vacuum casting.Geometric Constraints: Some complex internal features may require advanced 5-axis machines or alternative methods.