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Technological progress has led to increased demand for small components with tiny features, which cannot be achieved through conventional machining. Industrial application of processes based on microcutting is limited by some issues concing the geometrical scale. The process performance is significantly affected by millingmachine,tool holder, tool, workpiecematerialmicrostructure, workpiece fixtures, and process parameters. At present,an ultimate micromachining assessment procedure is not available. This study aims to propose and conduct an experiment on a testing procedure for micromilling. The set up to be implemented and the output to be considered are defined and described. Threemajor stages are identified: estimation of the effective bandwidth of the load cell–tool holder system, the millingmachine natural frequency measurement, and micromilling test execution. The entire procedure is performed, and its robustness is demonstrated.