It's shaded smooth in object mode (+ autosmooth). So everything's ok, but I need to smooth several 90 degrees angles. 3 angle is smooth, 2nd is not, the first one needs to be smooth too. How can I do that?
2 Answers
It looks to me like 3 has a bevel, but the others do not have the same bevel. Try selecting the 90 degree edges and applying a bevel (ctrl B).
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$\begingroup$ If I separate mesh I can do this for 90 degree angle (autosmooth off, picture updated). Shaded smooth only several faces in edit mode, not whole object. But I have to keep this whole details as one object for UV, so I need shade smooth whole object and these several 90 degree angles $\endgroup$– User 1May 13, 2020 at 16:01
Use Ctrl + B to bevel if that's what you mean by smooth. Make sure to apply scale beforehand