Normals still yellow after 'fixing' it

Followed the steps in Grants videos, pressed shift + N, still not fixed it.


do you have enough thickness. you could be seeing the back faces of the underside of the wings. If I remember correctly grant even mentions this in the video.


Probably your wing are:

  • Too thin, the upper face lies below the -under- face. Showing the red side.
  • The upper face is just missing (due too merge by distance?) and showing the inner face

As has been said, especially as there is one patch of Z fighting, it is highly probable we are seeing the back, red, of the ‘front’ faces poking through at the back. A wing membrane thickness issue.

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