Which of the following types of files is usually employed for finishing work?

Files are essential tools in metalworking and woodworking for shaping, smoothing, and finishing materials. Each type of file has a specific design that makes it suitable for certain tasks, but all types mentioned—double-cut, flat, and half-round—can be used for finishing work.

A double-cut file has a series of parallel grooves that are arranged in two directions, which allows for aggressive material removal and is often used for shaping rough surfaces before finer finishing work is applied.

A flat file, as its name implies, has a flat surface and is primarily used to smooth and finish flat surfaces. Its design allows for precision work on edges and surfaces, making it a suitable choice for finishing tasks.

A half-round file combines the attributes of a flat file and a round file, making it versatile for both flat and curved surfaces. This adaptability is beneficial when finer finishing is required in varied applications.

Given that all these files can effectively perform finishing work in different contexts, stating that all of them are usually employed for finishing work is entirely accurate. Each file serves distinct purposes in the finishing process, showcasing their importance in achieving a polished result.