## 1 Introduction  
The development of automation, robotics, and digital technologies is determined by the global development of the economy and individual industries, but also by the emerging technological and social trends. Three-dimensional printing as part of additive production constitutes an integral part of the concept behind Industry 4.0, the essence of which lies in the automation and digitization of production processes and systems. From the historical perspective, the concept of 3D printing appears in the 1980s, when a paper was published [1] describing a functional system of rapid prototyping using photopolymers. A layer-by-layer model was created using this system, with each layer corresponding to a cross-section of the model itself. At present, the technology of 3D printing is advancing, as evidenced by the amount of research published in various globally recognized journals. Particular attention is paid to the issue of assessing the properties of materials used in the fused deposition modeling (in short FDM) technology, in its analysis and rationalization [2; 3; 4; 5; 6; 7]. In their contribution, the authors [PERSON] et al. [8] describe the research of the influence of the infill density, the filling pattern, and the temperature during printing on the mechanical properties of the commonly used ABS material. Conclusions were drawn from the research providing information about the recommended print settings. A similar issue is described in research [9; 10; 11; 12; 13], where the properties and behavior of the ABS-like material were described. This material was subsequently compared also with the PLA material in the paper by the authors [PERSON] et al. [14], where dimensional deviations of the samples were defined within the tolerances defined by standard test protocols. A comparison of the behavior of materials conventionally used in additive production has also been described by the authors [15; 16; 17; 18; 19]. Thanks to several advantages, more and more polymer-based materials are being produced using FDM technology. The popularity is amplified by the price-to-size ratio of production units. Heated printer extruder head melts filament and deposit it on the growing work. A simple operating principle allows great material flexibility. Fused deposition modeling in their publication, [PERSON] et. al. [20] dealt with comparing the improved PLA polymer (PLA-3D) with the GNP reinforced PLA composite (PLA-Graphene), where they analyzed the geometric properties of dimensional accuracy, uniformity errors, surface roughness, and surface texture. The production of nanocomposite structures is also highly relevant, described, among others, in the publication [21] addressing the methodology of changes in mesostructures, where the addition of laminate nanofibers resulted in a higher Yong modulus. Research on nanocomposite structures in conjunction with additive technologies is also elaborated on in publications [22; 23; 24]. The significance and importance of this issue are confirmed by the publications of the authors at the global level. The authors [25] described the influence of process parameters on the mechanical properties of PLA. Based on the performed experiments, it was found that the extrusion temperature was the parameter of greatest influence in the variation of the analyzed responses. This finding was also described by a prediction model with a low error rate for the obtained data. A similar issue was addressed by the authors [26], examining the influence of process parameters on the tensile mechanical properties of PLA. This research proved the influence of the fiber-matrix interface on tensile mechanical properties. Also, it was recorded the printing layer height and extrusion width as influential attributes. Research on the influence of process parameters on components produced by 3D printing has also been investigated in other important publications [27; 28; 29; 30]. Often referenced downsides of FDM printers are part quality.