FDM/FFF technology (Fused Deposition Modelling/Fused Filament Fabrication) has existed worldwide since the beginning of the 1990s. The greatest advantage of this method of rapid prototyping is the possibility for inexpensive printing of prototypes from a wide range of plastics, such as: ABS, ASA, PC, PC-ABS, PEI, and PEEK. However, the precision of the objects printed in this technology is much lower, compared to other methods.