In Selective Laser Sintering (SLS), a 3D file is first broken down into individual layers of 0.06-0.18 mm and a layer information is prepared for the laser. After pre-temperature control of the assembly space, the laser beam is deflected with a focus of approx. d = 0.4 mm on the powder bed. When the laser is applied, a powdered plastic material is melted locally with the CO2 laser. So that the lateral displacement of the laser track does not leave any steps on the surface of the component, its contour is scanned by the laser after the layer information has been removed, line by line. By repeating this process, the component geometry is built layer by layer - a process that takes place completely in an N2 inert gas atmosphere.