Which type of file is used specifically for finishing work and sharpening blades?

The single-cut file is designed with a single series of parallel teeth that provide a smoother finish than other types of files. This type of file is particularly effective for fine shaping and finishing work, making it suitable for applications like sharpening blades. The configuration of the teeth helps to remove material more evenly without leaving deep scratches, resulting in a refined edge that is essential for blade sharpening and precision finishing.

While other types of files can remove material efficiently, they often leave a rougher surface. For instance, double-cut files, though effective for rapid material removal, create a coarser finish. Flat files are used for flat surfaces and can be more aggressive than a single-cut file, while round files are intended for internal curves and contours, which are not specifically geared towards finishing edges. Thus, the design and tooth pattern of the single-cut file uniquely position it for tasks that require a delicate touch and a high level of detail, such as finishing and sharpening blades.