In Grasshopper, I extruded these volumes as surfaces. [afbeelding] However, when meshed (plugging the polysurfaces into a mesh component) they look like this. [afbeelding] Using the Mesh command on the surfaces, I was able to reduce the mesh’s density using these settings: [afbeelding] Howe…

Surface to Mesh > Create Ngons from flat surfaces to export to Blender

DanielPiker (Daniel Piker) April 8, 2022, 1:31pm 2

In Rhino you can use the MergeAllCoplanarFaces command on a mesh.
Also make sure to check the ngons option in the export settings:

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