Printing with the technology of selective deposition has become very common in modern manufacturing. Despite the rapid development of this technology, there are still evident drawbacks associated with poor mechanical properties of the final product and low productivity. In the task, the focus was on finding optimal process parameters for 3D printing of PVA material while maintaining the mechanical properties and geometric tolerances of the final product. The speed of the print head movement and the preheating temperature of the layer with a silicone heater were varied. The design of experiments was created using the response surface method. A tensile test was used to test the mechanical properties of the final product. Dimensional deviations were also checked. It was shown that due to the limited capacity of the stepper motors, the speed of the print head is not linearly related to the 3D printing time. It was measured that the speed of the print head negatively affects the mechanical properties and consistency of 3D printing of PVA. It was proven that a higher preheating temperature positively affects the mechanical properties and negatively affects the accuracy of 3D printing of PVA.
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