Key Points 3-axis CNC precision machining handles the majority of prismatic parts faster, at lower cost, and with shorter setup times than 5-axis configurations 5-axis machining earns its cost premium only when geometry demands it: compound angles, undercuts, and features that can't be accessed from a single orientation Features machined in a single setup hold tighter positional relationships than features split across setups, which is one of the strongest arguments for 5-axis when tolerance stacks are tight Equipment availability for 5-axis operations is more limited, and the specialized programming requires more experienced operators, adding to both cost and lead time The right answer isn't always the more capable machine. It's the machine that matches your geometry without overcomplicating your supply chain Specifying a machining configuration before your drawing is finalized can quietly double your cost or extend your lead time by weeks. Most engineers know that 5-axis CNC (computer numerical control) precision machining can do things 3-axis can't. Fewer know exactly where that line sits, or how to design around it when it matters.