3D printing is a technological procedure of manufacturing solid objects. During the experiment, we were using 3D printer Sharebot which is based on fused deposition modeling. The material, shaped like a wire or filament, is fed from a coil into a heated printer extruder head. Filament is then extruded through a nozzle and deposited on the platform. The procedure is repeating itself until the solid model is made.
We were especially interested in geometrical stability of the samples that were obtained by using various printing speeds. We printed 3 series of samples, each printed with different printing speed. Manufacturing parameter varied between 1500 mm/min and 3500mm/min. After the printing process, we measured the samples and performed optical evaluation. Based on given results we realized that the samples, printed with the slowest printing speed had the best geometrical stability. Estimation of measurement uncertainty, absolute and relative error of measured samples increased with increased printing speed. Relative error of measured samples increased from 0,8% to 3,6% due to smaller dimensions. Absolute error of measured samples increased from 0,17 mm to 0,28 mm with higher printing speed.