hint: silk spider webs & fabric threads.
Guess 3d printing should have been clarified as linear, fused deposition. Melted plastic line gets scraped along plate/material.
The 3d printed web reference, in this instance, being the in-fill pattern. [0]
Robotic metal pinching / incremental sheet forming might be bit more clearer example. [1]
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[0] : in-fill pattern : https://jlc3dp.com/blog/choosing-the-right-infill-structure-...