What is the primary function of a lathe?

• A. Machine tool for shaping metal or wood that uses an extremely sharp edge and can be precise
• B. Planing tool used for flat surfaces
• C. Jig for cutting threads
• D. Tool for drilling holes

Answer: (A)

The main idea is that a lathe shapes material by turning the workpiece. As the piece spins, a sharp cutting tool is fed against it, removing material to form precise diameters and smooth surfaces, and it can create features like threads. This turning action is what defines a lathe’s function, setting it apart from tools that plane flat surfaces, function as a jig for cutting threads, or drill holes.