Create a systematic decision framework: Use 7075 aluminum for high-strength applications, 6061 for general structural components. Choose 316L stainless steel for marine environments, 304/304L for general use. Consider 303 stainless steel for complex geometries due to excellent machinability. Evaluate cost-effectiveness by analyzing working environment, load requirements, mechanical properties data, processing compatibility, and cost-performance ratios.

Implement adaptive machining strategies to reduce tool load variations. Adjust cutting parameters based on material characteristics. Use real-time temperature monitoring with thermal compensation algorithms. Establish predictive tool wear models for timely replacement. For Inconel 718, use ceramic or coated carbide tools with low-speed, high-feed strategies. For titanium alloys, maintain sharp tools with adequate cooling.

Implement three-stage post-processing: First, mechanically remove support structures and sandblast for surface improvement. Second, apply material-specific heat treatments - T6 for AlSi10Mg, stress relief annealing for titanium, age hardening for 17-4 PH. Third, perform precision CNC machining on critical dimensions, surface polishing, and quality verification. Optimize print parameters including 0.03-0.05mm layer thickness and intelligent support design.

Apply batch-based manufacturing strategy: Small batches (1-10 pieces) use 3D printing plus precision machining for rapid delivery without tooling costs. Medium batches (10-100 pieces) employ CNC machining for high precision and surface quality. Large batches (100+ pieces) combine sheet metal forming with CNC finishing for lowest unit costs. Optimize through material substitution analysis, process combination, batch planning, and supply chain management.