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    Binder-jetting 3D printer capable of voxel-based control over deposited ink volume, adaptive layer thickness, and selective multi-pass printing

    Year: 2021

    Journal: Rev. Sci. Instrum., Volume 92, DEC 1

    Authors: Persembe, E.; Parra-Cabrera, C.; Clasen, C.; Ameloot, R.

    Organizations: European Union [720996]; KU Leuven [C24/16/022]; Research Foundation Flanders (FWO Vlaanderen) [G084818N, 1516717N, 1512320N]

    The limited control over the printing process in commercial powder bed 3D printers hinders the exploration of novel materials and applications. In this study, a custom binder-jetting 3D printer was developed. The resulting fine-grained control over the printing process enables features such as voxel-based control over the printed ink volume, adaptive layer thickness, and selective multi-pass printing. A protocol was developed to optimize the 3D printing process for new build materials and binders, in which resolution tests were used as a guideline for improving the dimensional accuracy. As a demonstration of the voxel-based control over the printing process, a functionally graded object was printed.
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