Given the fact of the increasing meaning of individual and functional micro- or nanostructures, it is of high interest to open up two-photon polymerization (TPP) as a structuring technology for production. TPP offers real 3D capability while providing a high precision, so arbitrary geometries with optical, photonic or biological func-tionalities can be realized. Thus, the aim is to use TPP as a mastering technology for metal substrates that serve as tools for injection moulding.