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Creating knurl on certain faces using geometry nodes for 3D printing.

I know I can create a knurl in "normal" Blender.

knurl

Easy way to model spiral engraving (knurling) that is usually used on metal for better grip?

But I'm trying to create a knurl on certain faces (Example: Face 0 and 3 see red arrow).

I was thinking of using triangulate with subdivide (but we still can't subdivide certain faces easily) How to subdivide a selection of faces in geometry nodes. Then I would extrude the vertices to have them poke out.

img1

Any thoughts of creating a knurl and attaching it to certain faces using geometry nodes?

Attached file below.

PS: I'm using Blender 3.5.1 and this will be 3D printed.

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Triangulate the mesh in a checkerboard pattern to get an alternation of slanted edges that form rhombuses. And then move the vertices in the centers of the diamond along the normal upwards.

Result:

Download:

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  • $\begingroup$ Late comment, but a summary of the strategy expressed in the nodes would really improve this (nice) answer. $\endgroup$
    – Robin Betts ♦
    Commented Jul 21, 2023 at 8:14

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