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3trois
Participant
May 7, 2022
Answered

Imported mesh from blender has a hole

  • May 7, 2022
  • 1 reply
  • 1926 views

Hi, I'm following this guide and I have this mesh I've made and imported. It has a hole in the top mesh no matter how I turn it.

In blender it has the same design as the bottom.

This topic has been closed for replies.
Correct answer davescm

It looks like reversed normals.

Go back to Blender. In edit mode, select all, then recalculate the normals to be outside. 

Following that, you may need to re-unwrap before exporting again.

Dave

1 reply

davescm
Community Expert
davescmCommunity ExpertCorrect answer
Community Expert
May 7, 2022

It looks like reversed normals.

Go back to Blender. In edit mode, select all, then recalculate the normals to be outside. 

Following that, you may need to re-unwrap before exporting again.

Dave

3
3troisAuthor
Participant
May 7, 2022

Yes! That did it. Thank you.

Can you explain what was wrong?

davescm
Community Expert
davescmCommunity Expert
Community Expert
May 7, 2022

By default, in viewport 'solid view' Blender doesn't distinguish between correct and incorrect normals. It shows both front and back faces as solid.

Substance only shows solid on the front face as determined by the normals.

So the root cause was that the normals were incorrect on parts of your model. You can check in Blender's edit mode by turning on the face normal indicators. Always a good check to carry out before unwrapping.

 

Dave

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