Abstract: A method for manufacturing a cutting blade, which cutting blade is meant particularly to be used as a rotating cutter blade and, which is manufactured from a blade preform, being provided with a cutting surface. The blade preform includes a frame part, being made of a basic material and in which on an attachment surface, existing essentially at a cutting area of the cutting blade to be manufactured, is processed at least a wear resistant material layer that forms the cutting surface. The layer includes steel that is alloyed with tungsten or chromium and vanadium. A cutting blade, being manufactured according to the method, and use of an auxiliary material in manufacturing thereof.

Abstract: A method in connection with laser use, wherein one or more laser beams emitted by one or more laser sources are focused by beam guiding elements on a fusing spot. A filler delivered to the fusing spot is melted, especially for performing a welding, coating, and/or piece manufacturing process. The filler includes a substantially solid-state, elongated filler material that is fed by a delivery system to the fusing spot. The fusing spot is centrally located relative to the one or more laser beams focusing on the fusing spot. The one or more laser beams are diverged with a multi-segment mirror, especially for maintaining the symmetry of the intensity distribution thereof, whereby beams or divisional beams, reflecting from its various segment elements in substantially divergent directions, are converged on the fusing spot by a condenser system included in the beam guiding elements.