Import Objects - Strange shadows on imported models
Anyone who uses sketch up will know this problem..... dodgy looking shadows on flat surfaces. if you are like me and have no clue how to make ambient occlusion maps and things like that. i found a method to sort out them pesky shadows.

here i made a simple model with a hole in the middle to show you what i mean.
on the right model with horrible shadows on the left a lovely model with no horrible shadows.