> > one of the reasons that i was starting with openinventor/coin3d was that it > is well documented(lots of books on it). are there any text book on > opencascade that you could recomend? Soory, I do nor know of any OC books. But they have some pdf doc which help you to get started. OI/Coin is more visualization. I'am not so sure but I think there's no solid modelling.