Thanx I didn't noticed it is for igs.Thanx for telling me that.Sorry
I'm preparing my model for selling on 3d stocks,but I'm not sure if I use polygonal exporters for that job.I see the improvements when exporting my model as I explained you,but it is a little bit risky.I will keep experimenting with obj exporter,and if I find better exporting solution I will let you know.