Seminar paper describes the manufacture of tool core used to craft filigree precise flow regulators, which provide a streamline flow in water faucets. What may represent a problem is the manufacture of the hexagonally shaped plug located on the upper surface of the core. In paper we compare different types of the hexagonal shape manufacture technologies from the viewpoint of their expenses, which occur during the manufacture as well as the final surface quality. It has been discovered that best results can be achieved by the process of milling. Laser cutting and electrochemical machining, on the other hand, do not achieve a required surface quality.