Classification of 3D printing methods

The chapter describes the commonly used classification of additive manufacturing (AM) processes described in the International Standard ISO/ASTM 52900, the classification according to the method of deposition and fixation of layers and according to the type of material used in the process. The technologies included in each of these seven main process categories are briefly characterized, pointing to their applicability and possible limitations. Moreover, the main parameters determining the quality of 3D printing and the applicability of individual technologies are shown, as well as a comparison of the precision of parts production, their size, time consumption, the need for support and finishing processes, or the amount of generated waste. Finally, the current use of each technology and forecasts for growth in their use are also presented.