Additive manufacturing is increasingly used in mechanical engineering due to its significant advantages, such as reduced material consumption, the ability to create complex geometries, and shorter production times. This paper explores a method for designing and manufacturing gear transmissions using these technologies. To validate the selected transmission model, a dedicated test stand was first developed, providing a controlled environment for performance evaluation. Following the construction of this test stand, future improvements will focus on the integration of high-precision sensors and advanced monitoring systems. These additions will enable accurate measurement and analysis of key operational parameters, including torque, rotational speed, vibrations, and temperature. Monitoring these parameters is essential, as they directly affect mechanical efficiency, dimensional accuracy, operational stability, and system durability. The data obtained from future experimental tests will offer valuable input for optimizing the design, selecting appropriate materials for the additive manufacturing process, and enhancing the overall reliability of the transmission system.