Using the MELATO® (Metal Laminated Tooling) - technology deep drawing-, stamping - and injection molding tools of various sheet metal materials can be manufactured. The different kinds of stress such as pressure or temperature require adapted connecting technologies. Thus, a temperature-steady connection of the sheet metal lamellas is necessary for injection molds, which can resist the injection pressure. This paper describes the integration of tempering systems in injection molding tools or die casting tools. Related topics such as laser beam welding for bonding and laser beam build-up welding are presented as well.