I have following UV map!

UV Map

Those islands are both same, but one of them is mirrored. I can mirror the one of the parts by selecting UVs -> Mirror -> X Axis (Ctrl-M)

however the hard part is they are not aligned and even rotating one does not make it exactly match the other one and it leaves stretched marks when rendering on one side of the model.

I have found this forum post about almost same issue (different blender version) which does not have a proper answer either.

I tried using snap with vertex but still no luck properly overlapping two islands.

Is there anyway to align islands to X, Y axis or other model?

  1. Change the snapping from increment to vertex
    enter image description here

  2. Select an island with L

  3. Choose one of the vertices on the island and match it to the corresponding one on the other island

If they are not aligned due to rotation, continue with these steps

  1. Select the vertex that matches the island you are aligning to.
  2. Use Shift-S to snap the cursor to the selected vertex
  3. Select the one island with L
  4. Use . to set the pivot point to be the cursor
  5. Rotate the island until R and snap a vertex that isn't lined up with the cursor to the similar one on the other mesh.

If the scale doesn't match proceed further these steps

  1. With the pivot point still at the cursor at the matching vertex, hit S to scale until it snaps into place

If the map is distorted, or something above didn't work right, do these procedures instead of the above steps

  1. Snap each vertex individually to the corresponding vertex using G.

Note: if the snapping doesn't work, try holding down Ctrl

  • 2
    $\begingroup$ May be you meant to change the snapping from increment to vertex (1st step) ? $\endgroup$
    – Mr Zak
    Apr 12 '15 at 18:47
  • $\begingroup$ @MrZak Good catch! $\endgroup$ Apr 12 '15 at 19:08

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