Selective Laser Melting (SLM), an additive manufacturing technology, can be used for the production of tooling components with conformal cooling channels. ABB OY, Drives and Controls, was able to tremendously reduce the cycle time for a cabling grommet due to a redesign and optimization of a tooling insert. The optimized geometry of the part not only reduces the cycle time but also leads to less scrap parts in production.The aim of the case study of implementing conformal cooling for this insert was to improve the efficiency of the production and to increase the product quality resulting in less defective products.