Problem with model 3D

Hello everybody!

I have problem with missing parts in view of my model 3d.
I make this project in Blender. In blender all is fine.

Please help :slight_smile:

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You will have to flip your normals -> in blender select the part with the edit mode - space - flip normal - reimport :slight_smile:

Ok i find it!! Thank you very much for answer!!! :slight_smile:

Tutorials if somebody want more help:
://blender.stackexchange/questions/3606/why-are-some-faces-in-my-mesh-darker
?v=a4PfPCYhxSQ