Since the area of the tablet (filling hole for liquid aluminum) is where most of the material and the highest temperature is located, this usually determines the solidification period. In terms of cooling, cooling close to the contour makes most sense. Even in the case of hotspots (hot areas in the part), the cooling period can be shortened and the occurrence of cavities reduced.

While conventional cooling can only be introduced by drilling and is usually straight, near-contour cooling with ZLM (3D printing allows cooling to be introduced along the contour in 3D. This means it can be adapted to the geometry of complicated routes (e.g. spirals).

Without cooling, the cooling period is very long. The same is true of conventional cooling (old cooling). Near-contour cooling takes place close to the "hot" zone with a large surface area. This shortens the cooling period.

The Zetterer Laser Melting generative manufacturing process is an additive process for the direct production of metallic components. ZLM is a flatbed-powder process often referred to as metallic 3D printing.