Extrusion Instability Caused by Recycled Filament Diameter Fluctuations by Synchronous Feed Length Compensation

LI Junmei; HUANG Zifan; ZHANG Dehai; YANG Chunhui

doi:10.3969/j.issn.1674-6457.2025.10.008

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Journal of Netshape Forming Engineering ›› 2025, Vol. 17 ›› Issue (10) : 83-94. DOI: 10.3969/j.issn.1674-6457.2025.10.008

Iron and Steel Forming

Extrusion Instability Caused by Recycled Filament Diameter Fluctuations by Synchronous Feed Length Compensation

LI Junmei^1,2, HUANG Zifan^1,2, ZHANG Dehai^3,*, YANG Chunhui⁴

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Abstract

The work aims to reveal the quantitative relationship between the diameter fluctuation of 3D printing filaments and extrusion instability, and propose a method to address extrusion defects caused by filament diameter fluctuations through synchronized feed length compensation. Firstly, the sources of 3D printing filament diameter fluctuations were analyzed and the impact of filament diameter fluctuations on extrusion width was investigated based on a flat elliptical cross-section extruded filament model; Secondly, a compensation method for real-time measurement of filament diameter and dynamic correction of feed length was proposed to achieve precise control of extrusion volume; Finally, the method was validated through comparative experiments. The synchronized feed length compensation method effectively suppressed extrusion instability caused by diameter fluctuations of recycled 3D printing filaments. This provides technical support for promoting a circular economy in the field of 3D printing.

Key words

recycled 3D printing filament diameter / ideal filament / real filament / filament diameter fluctuation / extrusion instability / synchronous feed length compensation

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LI Junmei, HUANG Zifan, ZHANG Dehai, YANG Chunhui. Extrusion Instability Caused by Recycled Filament Diameter Fluctuations by Synchronous Feed Length Compensation[J]. Journal of Netshape Forming Engineering. 2025, 17(10): 83-94 https://doi.org/10.3969/j.issn.1674-6457.2025.10.008

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Funding

Henan Province Science and Technology Projects (182102210136); Key Scientific Research Projects of Henan Higher Education Institutions (25B460012)；Zhengzhou University of Science and Technology Project