Glossy material - smooth bool error

[Haloman]

Hi guys.. i'm trying to render some toy cars but i have this problem with the glossines materials:

when enabling the smooth bool i get this weird black edges:

error.jpg

without the smooth enabled the edge is gone but the models loses it's details

006_GTO_rev_01_image_02.png

can anyone help me pls?

sorry for the bad english

Halo

[roeland]

Those black borders can show up if the normal vector of a surface ends up pointing away from the camera after the smoothing. This will often happen near the outline of an object in the image. There is no real solution for this problem other than making sure the object is modeled as enough triangles.

The place where this black border shows up in this image seems a bit weird though. Can you post a close-up of the wheel, and maybe a wireframe?

--
Roeland

[steveps3]

I actually prefer the unsmoothed version.

[Haloman]

the normals are fine in the 3d model..

i thought it was a problem of scale but i've imported the obj according to it's scale

close up.png

the non smoothed version won't help me cause the client notticed the diference and asked me to render him the first render

wireframe.png

again sorry for the english

Halo

[Refracty]

did you try to rebuild the normals already?

[Haloman]

i don't know what u mean.. not that good with max either

normals.png

[steveps3]

To me it looks like it is just reflecting the black background. I can see what I think are your lights reflected as the white parts amongst the black. So if your background is black (turned down the environment lighting) then maybe you need to add a background plane which can be reflected.

[Refracty]

can you upload the scene - obj, ocs, mtl - (or only the part with the bad wheel) to check?

[Haloman]

files are supposed to be private.

you got pm

[Refracty]

I have fixed it. This was a Normal problem.
Enjoy

I have pm you the fixed file.