What type of machining is typically completed with a lathe, milling machine, or grinder?

The correct answer is the finishing process. This type of machining is focused on refining and enhancing the surface quality of a workpiece after it has been shaped or cut to its approximate dimensions. The lathe, milling machine, and grinder are commonly employed in this process, as they can achieve high levels of precision and smoothness on the final product.

During the finishing process, the objective is to remove minimal amounts of material, primarily to improve surface attributes such as flatness, surface finish, and dimensional accuracy. This stage is critical in ensuring that components meet the required specifications for function and aesthetics in their respective applications.

The lathe is often used for operations that require rotational symmetry, while milling machines can work on various surfaces and shapes, and grinders are specialized for achieving extremely fine finishes. This emphasizes the suitability of these machines for finishing tasks.