I'm looking for two features in Geometry Node:

  • Is there a way to select edges and convert them into a curve/solid outline
  • Is there a way to specifically select edges that are on the border, as in they do not share a border with another triangle.

1 Answer 1


That's very simple in geonodes, just select edges that have only one neighbor (face):

Testing with a Suzanne with one half removed:


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