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About this Abstract
Meeting 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Symposium 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Presentation Title In-Situ Surface Modification in Molten Metal Jetting
Author(s) Gabriel Stash, David Trauernicht, Denis Cormier
On-Site Speaker (Planned) Gabriel Stash
Abstract Scope Drop-on-Demand (DoD) Molten Metal Jetting (MMJ) is a promising additive manufacturing technique capable of high throughput and fine feature resolution. However, like other metal additive technologies, MMJ parts have a textured surface finish which can negatively affect mechanical properties and necessitate post-processing. We propose a novel in-situ surface modification method in which an external tool manipulates deposited molten metal droplets as they solidify at the part boundary. This continuous engagement during solidification yields a smoother surface, reducing post-processing requirements and improving as-built part quality. Preliminary results show that this approach considerably reduced as-built surface roughness in flat samples and has demonstrated promising surface modification in more complex geometries. We further discuss strategies for tool development and toolpath implementation to enable processing of arbitrary shapes.
Proceedings Inclusion? Undecided

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