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Virtual Dictionary


Extrusion in modelling is the act of taking a 2D plane, forming a shape on that plane, and then pushing out a solid object in that shape as a cylinder from that plane.

Extrusion can be positive or negative.

Positive extrusion adds a pillar of solid material to the model.

Negative extrusion removes any solid material already existing, in the space it extrudes across.

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Related Dictionary Entries for Extrusion:

Cutter Path


Negative extrusion

Passive Simulant

Positive Extrusion



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