Käsiviiloja

Käsiviiloja, often translated as hand files, are common tools used for abrading, shaping, and smoothing various materials. They are typically made of hardened steel and feature a textured surface with raised teeth or cuts. The design of these teeth varies depending on the intended use, with different types of files suited for different tasks.

The primary function of a käsiviila is to remove small amounts of material from a workpiece. This can be for deburring edges, removing rust, sharpening tools, or refining the shape of a metal or wooden object. The user grasps the handle and applies pressure while drawing the file across the surface of the material. The direction of the stroke is important; files are designed to cut effectively in one direction, usually away from the user.

There are numerous types of käsiviiloja, distinguished by their shape, cut pattern, and coarseness. Common shapes include flat, half-round, round, and triangular files, each ideal for specific geometries. The cut pattern can be single-cut, with parallel rows of teeth, or double-cut, with intersecting rows for faster material removal. Coarseness is categorized by "cut" numbers, with lower numbers indicating coarser teeth and higher numbers indicating finer teeth for smoother finishes. Proper selection and use of the appropriate käsiviila are crucial for achieving desired results and preventing damage to the workpiece or the tool itself.