Zamora, RosendoFaura, FélixLópez, JoaquínHernández Rodríguez, Julio2026-01-232026-01-232025-02-05Zamora, R.; Faura, F.; Hernández, J.; López, J., (2025). A volume-preserving model for predicting the geometry of traces produced by drop-on-demand 3D printing, Materials and Design 251, 113687. https://doi.org/10.1016/j.matdes.2025.1136870264-1275https://doi.org/10.1016/j.matdes.2025.113687https://hdl.handle.net/20.500.14468/31541The registered version of this article, first published in “Materials and Design 251 (2025), 113687", is available online at the publisher's website: Elsevier, https://doi.org/10.1016/j.matdes.2025.113687La versión registrada de este artículo, publicado por primera vez en “Materials and Design 251 (2025), 113687", está disponible en línea en el sitio web del editor: Elsevier, https://doi.org/10.1016/j.matdes.2025.113687A model is proposed to predict the geometry of traces generated by molten metal droplet deposition on a flat solid surface. The model also allows the determination of the nozzle displacement that ensures neither droplet buildup nor printed trace discontinuity as a function of impinging droplet size and drop-to-drop and drop-to-substrate contact angles. Experiments performed with Field's alloy droplets and experiments by other authors are used to validate the model. The proposed model significantly improves the predictions for the geometry of the traces obtained using a non-volume-conservative model.eninfo:eu-repo/semantics/openAccess3305 Tecnología de la construcciónartículoMolten metal droplet depositionPrinted metal tracesDrop-on-demandContact angle3D printing1873-4197