US Patent 6883405 Hand tool, in particular, a screwdriver

A process for profiling a workpiece engagement surface of a band tool, and a hand tool produced thereby, in particular a screwing tool, such as a screwdriver or wrench, pliers, a clamping tool or a file, comprising the steps of briefly irradiating the workpiece engagement surface (8) over a large area and/or locally with a high level of energy, such that a region of an irradiated zone which is close to the surface melts and solidifies suddenly at an edge to form a rib.