You must make a very tiny seam on the circular form! (center to perimeter or from anywhere to the perimeter) Because form must have 4 "sides" ! So another solution here a big one seam! But you see easily the "4 sides" of the curvated surface! [image: file.php?id=146671] [image: file.php?id=146672]

@rv1974 said: calculate IM+LC with 'don't render final image' option ON. In Vray for SketchUp, there is no such option.

@mudo said: You can try this, it's a start to you make some changes and get the results you want, hope it's help. Thanks Brother for your help. Your recommendation solves the problem.But I am still could not understand why vray gives 2 different type of output.Why GPU accelerated rendering is different than CPU. Sorry for the late reply. Cheers.