Direct metal laser sintering (DMLS) has become one of the most widely used methods for the additive manufacturing of metallic machine parts and tools. It allows the usage of all available metals and metallic alloys, enabling the production of parts with significant geometric complexity, which other technologies cannot produce. Many engineers, however, express concerns regarding the mechanical strength and reliability of items produced via DMLS. This article presents the results from an experimental evaluation of the basic strength parameters of samples of AISI 316 stainless steel, which were additively produced by means of selective laser sintering. Possible redistribution of the key alloying elements and changes in the phase state, which could result from the laser's thermal action and compromise the steel's corrosion resistance, have also been investigated using SEM and EDS. The experimental results revealed that the 3D printed parts show lower tensile strength by 13 % and lower modulus of elasticity by 57 %. The residual elongation after breaking and cross-contraction is also lower. The additively manufactured parts were also revealed to be porous, which could be seen as a disadvantage in the food processing industry.

The present work is aimed at developing and researching a robotic arm with five degrees of freedom, manufactured using 3D-printing technology and controlled by an ESP32 microcontroller. This technology is increasingly used in robotics, especially in the educational process, due to the possibilities for rapid prototyping, modification and restoration of individual components. In the development process, the mechanical, hardware and software parts of the system were implemented, and a basic kinematic analysis of the manipulator was performed. A control program was created, allowing the performance of “pick and place” tasks, as well as visualization and manual control through a developed application. The results obtained show that the developed system provides sufficient functionality and flexibility for use in robotics training, while at the same time allowing expansion and upgrading with additional functionalities. The main contribution of the work lies in the implementation of an accessible and adaptable robotic platform, suitable for educational and experimental purposes.