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3D printing is a rapidly growing and developing market segment bringing a number of advantages that make it interesting for many areas. One of them is transport, as thanks to additive technologies it is possible to print products with a low weight and almost immediately in urgent cases. The space requirements of printers are relatively small, which implies the possibility of placing production at the point of consumption. In transport, this is an advantage, especially when it is necessary to produce spare parts, the availability of which decreases significantly with the age of the equipment. In addition, printing enables the production of relatively complex objects, thanks to which it is possible to better adapt to the requirements. The current development of 3D printing also deals with usable materials in order to achieve the highest possible strength to weight ratio, thanks to which it will be possible to lighten the construction of transport systems in order to reduce emissions while achieving sufficient mechanical properties for practice. For this reason, emphasis is currently placed on printing fiber-reinforced thermoplastic composites. The authors of the article have been dealing with the evaluation of their mechanical properties for a long time in order to monitor the influence of various printing parameters on the achieved results, which resulted in the identification of the most suitable orientation of the filaments to achieve the highest values ​​of tensile strength. The aim of this publication was to follow up on this knowledge and to carry out a tensile test on similar samples printed from pure nylon in order to assess the suitability of pure nylon for practice. The results showed that the pure nylon samples achieved a higher strength in this case than the nylon samples reinforced with chopped carbon fiber. On the other hand, printing such a sample took more than an hour longer, which can be a problem when a spare part is urgently needed. Since the tensile diagrams show different behavior of the compared materials in the process of tensile loading, in the future the authors are preparing a comprehensive study focused on the tensile properties of pure nylon printed by the FFF method.