Understanding and controlling environmental effects in direct ink writing of upcycled biomaterials
Jamie Quinn Luik (TU Delft - Industrial Design Engineering)
Jeremy Faludi (TU Delft - Industrial Design Engineering)
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Abstract
This paper examines how ambient airflow, temperature, and humidity impact the print quality of upcycled biomaterials in Direct Ink Writing, and explores strategies for mitigation. A standardized pecan shell flour ink was used with optimized slicing parameters. Experiments in a controlled climate chamber involved sensor logging and statistical analysis. Airflow improved structural stability, overhang fidelity and bridging, but increased Z-axis shrinkage. Higher temperatures slightly improved bridging, while elevated humidity reduced stability and increased sagging, despite small bridging gains.
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