Indigo Renderer Forum

For some reason I am getting this wierd black effect when using phong shading.

Check your normals. (All faces in model pointing outward)?

Yup. I later found out edgesplit modifier fixes it. But why does it do it in the first place.

that's a normal smoothing problem.
all edges, sharper than about 30° will have that problem

It's a really fun model though Can't wait to see the final result !