| Abstract Scope |
Robocasting of ceramics enables fabrication of complex geometries; however, scaling printed structures while maintaining dimensional accuracy and geometric fidelity remains challenging. This study investigates the scale-up behavior of alumina-based ceramic components fabricated using a ceramic slurry maintained at a high solid loading of 55 vol% and identical sintering conditions. Various geometries, including lattices, thin walls, hollow domes, and tall structures, are evaluated to determine the influence of processing conditions on print quality and structural stability. Key printing parameters, including flow rate, print speed, and environmental humidity, are systematically varied under high and low conditions. After sintering, samples are characterized based on shrinkage behavior, dimensional deviation, and overall fidelity to the intended geometry. The objective of this work is to identify processing conditions that enable reliable scaling of robocasted ceramic parts while minimizing distortion and loss of dimensional accuracy in material extrusion additive manufacturing. |