Influence of printing orientation on properties of 3D-printed parts produced by polymer jetting technology.

This article examines how printing orientation affects the mechanical properties and surface characteristics of parts produced using VeroWhitePlus RGD835 polymer material via Polymer Jetting Technology, specifically the PolyJet process. The study found that parts printed in XZ, YZ, and vertical orientations exhibit 20–30% higher tensile strength and 15–25% greater hardness compared to those printed in XY and other orientations, due to more effective layer bonding influenced by non-uniform UV light energy absorption during printing. Surface roughness varied with orientation, with areas receiving higher UV exposure showing smoother surfaces and enhanced mechanical properties, while fracture analysis revealed brittle failure linked to voids and weak interlayer bonding. These findings highlight the anisotropic nature of PolyJet-printed parts and suggest that optimizing printing parameters such as orientation, UV exposure, and layer thickness can improve mechanical performance and surface quality. Further research is recommended to explore other polymer jetting technologies and long-term durability under cyclic loading.