- User Since
- Jan 9 2019, 11:54 PM (23 w, 14 h)
Jan 12 2019
Removing duplicate edges/faces is just how blender works since it is considered invalid data. You can have duplicate vertices, though. And with duplicate vertices, you can overlap faces that use entirely different vertices that sit in the exact same positions. You can also duplicate triangles into separate meshes and overlap them that way.
Jan 10 2019
You're right, that's an unnecessary extra normals calculation.