So I have the following issue:

I'm trying to unwrap the top of this platform. I choose some vertical seams on the sides (screenshot), with the objective that the unwrapped model will look like it was flattened from above.


The problem is, Blender always seems to choose one entire edge ring as a seam. I tried "Clear Seam" and "Clear Edge", with no results. This is causing some vertices split, and is giving me some problems when painting the texture.

Is there a way to tell Blender NOT to cut through a specific edge when unwrapping?

Expected result

Hopefully you guys can help me achieve my expected result :)

Thanks in advance!

  • $\begingroup$ Did you try to select all and Remove Doubles? So you can be sure your geometry is all connected. $\endgroup$ Commented Oct 6, 2017 at 12:49
  • $\begingroup$ Are you the default Unwrap? Smart Unwrap? $\endgroup$
    – Dimali
    Commented Oct 6, 2017 at 14:24
  • $\begingroup$ @JanKadeřábek I didn't! Now that you mention it, I think this might do the trick. When modelling this I split the platform top into two separate objects and later I rejoined them, perhaps I have duplicates. I'll reply if it worked later today when I get home. I just used the default unwrap with 4 seams (2 of them are shown in the first picture, the other 2 are on the back side) $\endgroup$ Commented Oct 6, 2017 at 17:04
  • $\begingroup$ Removing Doubles did the trick! Many thanks @JanKadeřábek! $\endgroup$ Commented Oct 7, 2017 at 1:25
  • $\begingroup$ I am happy it helped! I have added my tip as an answer, you can accept it so others can quickly see the solution. Thanks and happy Blending :) $\endgroup$ Commented Oct 7, 2017 at 8:49

1 Answer 1


This is often happening when the mesh of your model is not all connected.

To merge vertices placed in the same position:

  1. Go into Edit Mode Tab
  2. Select all A
  3. Open Specials menu W, select Remove Doubles enter image description here

  4. Unwrap the model again


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