Hello! Do you check smoothing groups?
I made a sphere in Blender. Gave it some thickness. Cut it into quarters, and pulled it into UE.
The UVs are fine. The normals are ok. The material has no textures. But… I still get seams with reflective materials.
Why?..
So, I have no sharp edges, and I’ve tried normals, face and edge for smoothing on export. No joy.
How do I tell blender it’s all one smoothing group? Also, UE does say something about smoothing groups missing when I import…
Meh… there is something wrong in Blender actually…:
No. Good idea, how the hell do I do that?
Ahhhhh… the edges are sharp… ■■■■ plugins… 
