Abstract: A method for CNC machining internal structures of globe valves from solid forged NAB includes providing a globe valve design that includes an internal structure sized such that standard CNC machining turning and milling tools are geometrically incapable of machining the internal structure. The method also includes creating a custom CNC machining turning or milling tool corresponding to the globe valve design, which includes an arm, a branch connected to the arm and substantially perpendicular to the arm, and a tip connected to a distal end of the branch. The method further includes providing a piece of solid forged NAB and CNC machining the one or more openings and the internal structure of the globe valve design from the piece of solid forged NAB using standard CNC machining turning or milling tools and the custom CNC machining turning or milling tool corresponding to the globe valve design.