## 3 Results  
The objective of the experiment was to identify the optimal 3D printing parameters for minimizing the deviation in the samples. For this purpose, we printed 17 samples under different printing parameter conditions, including variations in the printing temperature, layer height, and printing speed. Figure 6 presents a graphical representation of the samples printed at varying parameter values. The first row displays the samples printed at varying layer heights (0.08 mm to 0.39 mm) at a constant temperature of 225 \({}^{\circ}\)C and a speed of 50 mm/s. The second row depicts the samples printed at different temperatures (190 \({}^{\circ}\)C to 270 \({}^{\circ}\)C) at a constant layer height of 0.2 mm and a speed of 50 mm/s. The samples in the third row were printed at different printing speeds (ranging from 50 mm/s to 350 mm/s) at a constant temperature of 225 \({}^{\circ}\)C and a layer height of 0.2 mm. Figure 7 illustrates the external surface of a representative sample observed under optical microscopy, with a outer perimeter line. The image illustrates the distinct layers of the printed object, each of which is clearly discernible due to the high resolution of the microscope. The image illustrates the delineation of the individual layers, as indicated by the yellow dotted line, which facilitates a comprehensive examination of the intricate layering and the identification of subtleties and potential imperfections. This measurement approach is advantageous for gaining insights into the uniformity of the printed object's layers, which, in turn, can inform the optimization of the printing process. By measuring the external boundaries of the samples using a laser sensor, 1000 data points from 3200 measurements were obtained for each sample. These values represent a 2.2 mm section of the overall thickness of the measured perimeter of the sample. To identify the range of the data, a plot was created. The graph (Figure 8) shows the measured outer-perimeter values for samples produced at various printing speeds. The X-axis represents the measurement values, which range from 1 to 1000 and correspond to individual points  
Figure 6: Presentation of printed samples obtained during the experiment. on the outer perimeter of the sample. The Y-axis depicts the height values in millimeters, spanning from 1.9 to 2.25 mm. The first sample is represented in dark blue. The values in question exhibit a range of approximately 0.123 mm, with notable fluctuations within this range. Sample 2, depicted in orange, exhibits values that are slightly inferior to those of Sample 1, spanning a range between 2.0533 mm and 2.1885 mm. However, it also demonstrates a pattern of regular oscillations. Sample 3, displayed in green, exhibits a comparable range to Sample 2, with values between 2.0195 mm and 2.1743 mm, though with slightly elevated minimum values. Sample 4, depicted in blue, exhibits values between 2.0688 mm and 2.1895 mm, displaying a distinctive pattern of oscillations in comparison to the other samples. Sample 5, depicted in purple, exhibits the most pronounced range of values, spanning from 2.08 mm to 2.188 mm, with discernible peaks and troughs. A statistical evaluation of the data indicates a consistent oscillation present in the measured values of all the samples, which may be indicative of regular variation in the perimeters of the printed layers. The range of values across the samples remains relatively consistent, with minimal variation between the lowest and highest  
Figure 8: Graph of measured outer-perimeter values for samples printed at different speeds. Figure 7: Microscopic image of the outer edge of one sample. values. This indicates that varying print speeds may influence the uniformity of the layered process to a certain extent, although the observed discrepancies are relatively insignificant.