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CNC lathe machining is built on four interdependent operations: facing, turning, threading, and grooving. Each serves a distinct geometric and functional purpose, yet none operates in isolation. Facing establishes the axial reference, turning defines the cylindrical form, and threading creates the mechanical engagement features that hold assemblies together.

CNC machining costs are rarely the result of a single variable. As the sections above demonstrate, material selection, part design complexity, setup and tooling investment, and production volume each contribute independently to the final cost of a machined component, and their interactions compound quickly when multiple cost drivers are present simultaneously.

Strong DFM protects product performance while removing avoidable machining cost, setup complexity, and inspection risk.