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This study examines dimensional deviations in polylactic acid (PLA)3D printed parts with cylindrical features and explores compensations to ensure loose fits in cylinder-hole assemblies. In the first phase, samples with cylindrical features, including solid protrusionsand holes (3.5–30 mm), were fabricated and measured to analyse deviations from designed dimensions. In the second phase, these findings were used to adjust dimensions, and new cylinder-hole pairs were printed to achieve the desired loose fit. Printing parameters such as layer height and infill density were varied to assess their impact on dimensional accuracy. Results confirmed that applied compensations successfully achieved loose fits, offering practical guidelines for designing PLA parts for assembly applications.

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Dimensional Compensation for Loose Fit Assemblies in FDM 3D Printing of PLA Cylindrical Parts

  • 会议论文

  • 发表日期：

    2025年

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  • Josip Kačmarčik,
  • Ernad Bešlagić,
  • Kenan Varda,
  • Mirzeta Mujkanović

摘要

This study examines dimensional deviations in polylactic acid (PLA)3D printed parts with cylindrical features and explores compensations to ensure loose fits in cylinder-hole assemblies. In the first phase, samples with cylindrical features, including solid protrusionsand holes (3.5–30 mm), were fabricated and measured to analyse deviations from designed dimensions. In the second phase, these findings were used to adjust dimensions, and new cylinder-hole pairs were printed to achieve the desired loose fit. Printing parameters such as layer height and infill density were varied to assess their impact on dimensional accuracy. Results confirmed that applied compensations successfully achieved loose fits, offering practical guidelines for designing PLA parts for assembly applications.