What is the subtractive manufacturing process using a rotating cutter to remove material?

• A. Turning
• B. Soldering
• C. Milling
• D. CNC machining

Answer: (C)

Milling is the subtractive manufacturing process that uses a rotating cutting tool to remove material from a workpiece to shape it. The cutter spins and engages the workpiece to create features like slots, pockets, and profiles, with the motion of the tool or the workpiece often controlled across multiple axes. This distinguishes it from turning, where the workpiece rotates while a stationary tool cuts along its length, and from soldering, which joins pieces together rather than removing material. CNC machining is the broader control method that can govern milling machines, but the specific operation described—material removal with a rotating cutter—matches milling.