Research of 3D printed object dimensions influence on surface precision

Abstract

3D printing becomes more popular not only in arts, entertainment but also in production of industrial objects. Wider use of this technology needs quality of final product to be foreseen more accurately and effectively. While analyzing 3D printed object’s relative measurements of 2D objects are taken into consideration. Main goal is to analyze influence of 3D printed object’s size to its precision, prototype printing and evaluation. During analyze difference of whole project and printed model parameters and representation faults of a single fragment were evaluated. During research, ABS and PETG polymer were used. Experiment’s step flow chart was created, variables of printing parameters were chosen and evaluation criteria were foreseen. Prepared 3D model is converted into STL file format. While generating operating G-code of a print-head, the same layer generating criteria were used for all printed models. All printed models were measured and according to gathered data charts of faults and deviations were created. Results and conclusions are presented. Notable, that major fault repeatability in 3D printed objects is noticeable along Z axis.