Toolpath considerations for extrusion: Pellet, filament, concrete, and thermoset

Book · Mon Jan 01 04:00:00 EST 2024

OSTI ID:2333843

Roschli, Alex ^[1]; Borish, Michael ^[1]; Barnes, Abby ^[1]; Wang, Peter ^[1]; Feldhausen, Thomas ^[1]; Macdonald, Eric ^[1]

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1. ORNL

There are a variety of extrusion and deposition-based processes for additive manufacturing, such as fused deposition modeling (FDM), fused filament fabrication (FFF), and directed energy deposition (DED). These processes can use a variety of materials, including thermoplastic pellets, thermoplastic filament, thermoset, concrete, metal wire, metal powder, and more. For all these processes and materials, the underlying toolpath strategies for 3D-printing an object are the same: the object to be printed is sliced into layers, then the layer is optimally fit with toolpaths of a given width, based on specific user settings. However, based on the specific process being used, additional modifiers and toolpathing strategies may be employed to maximize the capabilities of the process and successfully construct an object. This chapter explores the different pathing considerations and additional strategies to be employed in extrusion processes that use thermoplastics, thermosets, and concretes.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 2333843
• Country of Publication: United States
• Language: English