When evaluating a powder compacting press, the most critical factor is the Pressing Force (Tonnage), which must align with the density requirements of your specific material (metal, ceramic, or carbon). You should prioritize machines with High-Precision Servo Systems for better control over the compression cycle and Multi-Level Tooling capabilities to produce complex geometries. Additionally, ensure the Stroke Length and Die Fill Depth are sufficient for your largest parts, and verify that the frame is constructed from High-Rigidity Cast Iron or Steel to minimize deflection under load.