I'm facing some UV unwrapping problems, and I don't know why, how or where the deformity is coming from.
Help.
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2 Answers
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3 Subdivider problem
Besides the UV deformation iself (which will be solved below) there is a problem in the subdivider settings. You need to set the UV Smooth option to something different from "keep boundaries".
I don't know exactly the difference between the other options, but they work well:
UV deformation
There is also deformity in the UV itself, as you can see in the UV editor.
This deformity is trying to minimize distortion in a 3d shape where it's just impossible to have zero distortion (because of the shape itself).
But you can edit the UV to be made of rectangles (you deliberately increase distortion at the end of the conical parts to achieve a perfect alignment).
For that, you pick one of the most central rectangles. Consider this rectangle in the steps below.
Make the central quad perfectly rectangular
With "vertex selection", there are four steps:
- Get the left side vertices, scale, X, zero (this is shown in the picture below)
- Then the right side, scale, X, zero
- Now the top of the rectangle, scale, Y, zero
- And the bottom of the rectangle, scale, Y, zero
Align the rest of the rectangles
Now with "face selection":
- select the perfect rectangle face
- press L (to select all linked faces)
- Right click and "Follow active quads".
Result
This will straighten your UV:
- $\begingroup$ Hey Daniel. I appreciate the correction. I followed and made the adjustments, but the deformity persists. Attached is the blend file. Please check through it in your leisure. Thank you. $\endgroup$Ogunlesi Taiwo– Ogunlesi Taiwo2025-03-28 09:16:27 +00:00Commented Mar 28 at 9:16
- 1$\begingroup$ @OgunlesiTaiwo, I found out the issue, you need to change the settings for "UV Smooth" in the subdivision surface modifier too. $\endgroup$Daniel Möller– Daniel Möller2025-03-28 11:10:28 +00:00Commented Mar 28 at 11:10
- $\begingroup$ Hey Daniel, I have just adjusted it to None. It looks better. Thanks chief. $\endgroup$Ogunlesi Taiwo– Ogunlesi Taiwo2025-03-28 12:05:15 +00:00Commented Mar 28 at 12:05
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As an alternative to Daniel's answer, you can activate the UV Squares addon, select all in the UV Editor, open the N panel > UV Squares and click on the To Grid by Square button:
