that a significantly better cut edge quality can be achieved by means of a fiber laser with high beam quality and the additional use of a customized nozzle due to the flow of the cutting gas in supersonic range. The results show a reduced burr adhesion and a lower cut edge roughness. The cutting of thin sheets (thickness<0.5 mm) is also possible by remote cutting. Here, the laser beam is deflected by tilting mirrors and projected onto the surface. By use of brilliant high-power lasers, the metal is partially vapourized and driven out of the kerf due to the evaporation pressure.