@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):
sunlight.jpg
rectlight.jpg
I think I shall not use sunlight with this model.
And thanks to all for suggestions!