The automotive industry is constantly looking for new technologies to be applied in order to improve the qualities and performances both of the components produced and of the whole production chain. Among these, the Wire Arc Additive Manufacturing (WAAM) is earning increasing interest in the last few years. It belongs to the so-called additive manufacturing (AM) processes, in which the part is fabricated by the addition of material, rather than subtraction of it. The AM processes constitute an innovative method to produce components, consequently, a huge amount of research has been focused on them in the last two decades. Among the different variants, the WAAM process is meant for the fabrication of metal components and is based on conventional welding technologies.