Blender Objects Import Without Surfaces

Unity Engine
1

I’m trying to import this screwdriver model into Unity from Blender, but every time I do, the surfaces seem to not show up despite that they are visible in the Blender project.

4401829--400564--screwunity.jpg
4401829--400564--screwunity.jpg1920×1080 404 KB

4401829--400567--screwblender.png
4401829--400567--screwblender.png1920×1080 295 KB

Is there any way to fix this?

Thank you.

2

In Blender, go to edit mode, select all and press CTRL+N (recalc of normals).
Then import again in Unity.

3

I’ve actually had this problem myself and haven’t worked out how to fix it even with flipping the normals and so on, by any chance @ConorGunn have you been deleting faces?