The described idea aims to increase the 3D printed parts strength in Z-axis by creating a non-planar infill when printing with a Fused Filament Fabrication (FFF) printer. This non-planar infill is created using standard planar moves of the nozzle and uses extreme over-extrusion to shape the molten plastic in a controlled way across layers.
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Konvicny, Jiri, "Increasing z-strength by over-extrusion", Technical Disclosure Commons, (April 26, 2021)