Through a series of progressively advancing composite machining programs for the F135 and demonstrated gains in efficiency and improved quality by applying its physics-based modeling technology and optimizing current F135 machining processes. Machining time was reduced by nearly 50 percent, while quality was improved to a point where the demonstration component passed First Article Inspection. This was achieved by modeling the machining of polymer matrix composites (PMCs) and to predict and optimize forces and temperatures during machining as well as control them through feed and speed selection.