EFFECT OF SELECTED PARAMETERS ON FDM-HIGH-SPEED 3D PRINTED SPECIMEN PROPERTIES

The paper investigates the influence of nozzle temperature (190 and 230 °C) and print speed (50, 100, 150, 200, 250 and 300 mm/s) on the tensile force of polylactic acid (PLA) and high-speed PLA (HS-PLA) test specimens fabricated via additive manufacturing method Fused Deposition Modelling (FDM). Results show that PLA test specimens printed at 230 °C exhibits tensile forces up to 2000 N, over three times higher than test specimens printed at 190 °C. Tensile force for PLA decreases between 50–100 mm/s but partially recovers near 250 mm/s. HS-PLA shows relatively consistent tensile force values across the tested print speeds and temperatures, indicating better stability compared to PLA. These findings highlight the significant effect of nozzle temperature and print speed on mechanical performance, providing useful insights for the application of FDM in HS 3D printing. As HS 3D printing gains traction, the paper emphasizes not only hardware improvements but also the critical role of material selection.