Investigation of Printing Parameters on Dimensional Accuracy of Geometrically Complex Objects in FDM 3D Printing

Document Type : Original Article

Authors

1 Polymer Engineering Department, Qom University of Technology, P.O. Box: 1519-37195, Qom, Iran

2 Department of Printing Science and Technology, Institute for Color Science and Technology, P.O. Box: 32465-654, Tehran, Iran

Abstract

This study examines the effects of seven key printing parameters—bed temperature, nozzle temperature, nozzle diameter, print speed, infill density, infill angle, and layer height—on the dimensional accuracy of geometrically complex parts, such as screws and nuts, fabricated using Fused Deposition Modeling (FDM). Utilizing an L8 orthogonal array within a design of experiments (DOE) framework, the parameters were analyzed for their influence on both overall and detailed dimensional characteristics across length, width, and height axes. The results reveal that layer height, nozzle diameter, and bed temperature significantly impact dimensional accuracy, with interactions between factors playing a crucial role. The maximum observed variation was 4 % for screw diameters and 7 % for nut diameters. Findings highlight the importance of optimizing parameter interactions to enhance accuracy and the practical utility of Taguchi's methodology in reducing experimental complexity. This research provides valuable insights for improving the precision of 3D-printed components, particularly in applications requiring complex geometries.

Keywords

Main Subjects

References

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Progress in Color, Colorants and Coatings
Volume 18, Issue 4 - Serial Number 59
October 2025
Pages 493-502

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