I have a beveled model, and need to use cube unwrap, the issue is with subsurface modifier which, when is set to catmull clark, smoothes the beveled part in a unwanted way.

here is a picture of the issue: enter image description here

Same with options smooth to to 'None': enter image description here

And the desired result with the subdivision set to simple: enter image description here

Why is the smooth uv option not being effective ? How can I solve that ?

  • $\begingroup$ Is the unwrap correct? Please pack your image and share your file $\endgroup$
    – moonboots
    Commented Jul 16, 2022 at 7:54

1 Answer 1


I would use some support edges. Do you have some crease value set up >0?

  • $\begingroup$ No, no crease set. What do you mean by support edges ? One more cut ? $\endgroup$
    – Yvain
    Commented Jul 16, 2022 at 9:08
  • $\begingroup$ Ok got it, unwrap is behaving as expected with support edges $\endgroup$
    – Yvain
    Commented Jul 16, 2022 at 9:16
  • $\begingroup$ @Yvain If the answer solved your problem, kindly accept it. $\endgroup$ Commented Jul 16, 2022 at 9:44

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