Which of the following is not considered work typically performed by a machinist?

The role of a machinist primarily involves processes directly related to shaping, finishing, or altering material, especially metal. Reboring, grinding, and honing are all machining operations that focus on refining the dimensions and surface quality of components.

Reboring refers to enlarging an existing hole to a specific needed diameter to ensure proper fitting or precise tolerances. Grinding produces a smooth finish by removing material with a rotating grindstone or wheel, often used for achieving precise dimensions and surface finishes. Honing, similarly, is a process used to improve the geometric form of a surface and enhance its finish, typically on internal cylindrical surfaces.

On the other hand, overhauling encompasses a broader scope, often involving the disassembly, inspection, repair, or replacement of components as part of maintenance work rather than the specialized machining operations that a machinist would typically perform. Thus, as overhauling is more related to maintenance and repair rather than machining tasks, it is the correct choice for identifying what is not typically performed by a machinist.