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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 Stable multilayer VTP tubular structures
Author(s) Kelsey Snapp, Brett Emery, Jeffrey Lipton
On-Site Speaker (Planned) Kelsey Snapp
Abstract Scope Fabricating fine-scale cellular and lattice structures via extrusion-based additive manufacturing remains challenging due to inherent resolution constraints of the hardware. Viscous thread printing (VTP) exploits the predictable coiling instability of a viscous filament deposited from a translating nozzle, enabling cellular geometries at the scale of the printer's native capability. By controlling nozzle height and translation speed, various patterns can be produced. Of particular interest are translating coils that, when tightly overlapped, form tube-like three-dimensional structures from a single printed layer. However, these tubular structures are highly sensitive to surface irregularities, causing subsequent layers printed atop them fail to produce clean tube geometries due to the uneven surface of the preceding layer. This study systematically investigates VTP process parameters to identify conditions that yield consistent tubular structures robust enough for successful multilayer fabrication.
Proceedings Inclusion? Undecided

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