I have this curved surface:


With subdiv modifier it looks exactly as I want:

side top

So is this the only way to get such a geometry? If I add a connection between vertices, it changes the shape of subdivided mesh.

  • 3
    $\begingroup$ There is not necessarily anything wrong with having n-gons if it produces a topology you are happy with after subdivision, particularly if the n-gons are coplanar (which they are here). Is there a particular reason you would like to avoid the n-gons in this case? Or are you just asking a question about “good hygiene,” so to speak? $\endgroup$ Apr 13, 2021 at 11:04
  • $\begingroup$ I just watched some Blender course and the guy said that you always have to avoid ngons. Maybe I took it too literally :D $\endgroup$
    – razor3x
    Apr 13, 2021 at 11:19
  • 2
    $\begingroup$ Yes, there are people telling you to avoid ngons. And there are definitely reasons and cases where this is applicable, but it is not necessary (I'd even call it nonsense) to always avoid them. Blender works good with quads, but ngons often work as well. Other programs might prefer triangles. Things like Loop Cuts (Ctrl+R) will neither work with ngons nor triangles. But there are even tutorials on Youtube where people explain when ngons might be even better than trying to make all quads. $\endgroup$ Apr 13, 2021 at 13:00
  • 1
    $\begingroup$ Does this answer your question? When should N-Gons be used, and when shouldn't they? $\endgroup$ Apr 14, 2021 at 23:34


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