3D printing represents the future of the construction industry. However, the journey towards the everyday utilization of 3D-printed components is still extensive, primarily due to the lack of knowledge about mechanical properties for the majority of materials used in 3D printing. Within the scope of my thesis, I examined the mechanical properties of samples printed from a biocomposite material comprising 60 % polymer and 40 % pine wood fibres. This material is an anisotropic substance, exhibiting distinct properties in different directions. Therefore, an empirical testing and results analysis is necessary for each filling and orientation method. Printing was carried out on a 3D printer at the Faculty of Civil Engineering and Geodesy at the University of Ljubljana. The initial section describes the inception of 3D printing, offering an overview of its historical evolution and its contemporary applications. Various 3D printing methods are outlined, highlighting their respective advantages and limitations. The subsequent section delves into 3D printing in the realm of civil engineering. I introduce the printer at the faculty, the materials employed, significant structures constructed via 3D printing, and the process bridging the gap from concept to final product. In the third section, I present the print plan, the chosen materials, dimensions, density determinations, and types of fillings. Additionally, I expound upon the design and preparation process for the specimens intended for 3D printing.The fourth segment provides a description of the execution of a bending test within the laboratory of the Faculty of Civil Engineering and Geodesy at the University of Ljubljana. The fifth section involves the analysis of the test results.