Today for a change it is not about a joining technology: In the contrary, by the use of laser components cannot only be joined, but also cutted. In laser cutting, the focused laser beam is absorbed at the front of the kerf, applying the energy required for cutting. At the same time, gas protects the focusing optics against vapors and spatter, and removes debris from the kerf.Especially for the cutting of plate-shaped parts, but also for 3D cutting laser is a popular process. Non-contact cutting and a small heat affected zone allow a precise and fast processing with a neat cutting edge, even with a complex outline. This way the material can be used with optimum output. For example the automotive industry utilises laser cutting to cut openings in components that have already been joined without redeforming the prepared part.