The main study field, where pages of my thesis work are set in, is additive manufacturing (AM). With this term engineers identify a range of technologies that allow to easily and quickly realize parts and prototypes, through a layer-by-layer approach, progressively adding material. These powerful, but very complex, tools, briefly described in following chapters, have already been applied in the aerospace, automotive and medical fields; despite popular knowledge, industrial technologies are clearly beyond the colloquially known as “3D printers” machines in term of quality level of quality and performances of built objects. As I discovered during my technical studies, it is common opinion that the direct manufacturing, from a virtual shape to physical part, is not as accurate, simple, but especially as repeatable as it could appear.