Comparison of 3D Printout Quality from FDM and MSLA Technology in Unit Production

The paper presents research on the comparison of printouts from two different additive technologies: FDM and MSLA. Two printers were from the same producer. The paper describes the successive steps of the research and the final results. The study was carried out to determine the strengths and weaknesses of the FDM and MSLA technologies, as well as their suitability for use in unit and hobby production. The research consists of the following steps: conceptualization and design of 3D models (in Autodesk Fusion 360 2.0.12670 software), development of the survey questionnaire, expert selection, setting the printing parameters for two printers, printing process, evaluation of the printouts, and finally calculating and analyzing surveys results. The authors designed eight models; therefore, they get sixteen printouts that were the subject of comparison for experts. All cube-based models were symmetric about point, axis, and plane. The research included ten experts who were chosen on the basis of specific criteria. The research was referring to unit production. The symmetrical layout of each model on the 3D printer worktable was to verify the operation of the nozzle of this machine in relation to all axes. Moreover, the symmetry of the models made it possible to check the quality of the printouts on each side in three planes. The sum of all collected data from the surveys was 2400.