Blender Flip normals no work in Urho3D ?
If in Blender select a model and select all the faces and Flip the normals of the selected faces, at import and check the model in Urho3D editor no make changes ?
The model always have the material in the same side with flipped normals or without.
Are you using the reattiva blender exporter ?
Normals are different than the side of the material. The ‘winding’ of the vertices is what determines what direction a material is. A triangle can have 2 different ways to wind. Clockwise and Counter Clock WIse. There is a material parameter to switch which way is what.