@chris fullmer said: In SketchUp you'll see that those faces that are extra dark are in a shadow from the sun. Try this, turn off shadows and turn on "Use Sun for Shading". You see you get a smooth shading, but no hard shadow lines. I know that doesn't help with V-Ray though. Maybe in v-ray do something to help diffuse your sunlight. I'm not sure how V-Ray works, but can you make you sun physically larger? I think it would help if you didn't have a small point of light casting the shadows, but if you had instead a large light that would create softer shadows. That might be something to try. Thank you very much for bringing me to a couple of ideas! 1.Increase the size of the sun (1 to 24): [image: JFhr_sunlight.jpg] Do not use the sunlight at all. I tried a rectalgular light instead: [image: 4oRj_rectlight.jpg] I think I shall not use sunlight with this model. And thanks to all for suggestions!

Guys, you are exaggerating ) This is my first big SketchUp job, and it has been going on for almost a year. When i started, i knew nothing about plugins, rendering and many other stuff. PS: just made ​​another render, and see that there is still a lot of improvements to do. Thahks you all for your advice and criticism