- User Since
- Wed, Jan 9, 11:54 PM (1 w, 5 d)
Sat, Jan 12
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.
Thu, Jan 10
You're right, that's an unnecessary extra normals calculation.