Metal 3D printing is still expensive and time-consuming for large molds; therefore, the consideration of manufacturability, tooling costs, and the technical as well as economic benefits of conformal cooling channels made by 3D printing should also be further studied. Another interesting research topic is artificial intelligence control of smart and advanced mold systems, wherein the mold temperature is partially controlled by the cooling system and the process parameters are adaptively adjusted to ensure quality consistency and achieve energy savings.