Yess, it works!!!!! (Ofcourse only if I keep the settings between -0.5 and 1) Thanks for the help Now the big question: how can I prevent this next time? Did I do something wrong or did I simply choose the wrong application (Rhino)? Somehow I don't think that I can blame it on Rhino, it is probably my inexperience that caused mesh to breakup, but how do I tell Rhino to keep it in the same place? I have started again working with Lightwave (Last time was 10 years ago on the Amiga computer) but have not mastered. the Lightwave modeller yet. You talked about the C4D's object manager. Cinema 4d was originally developed on the Amiga, but when Commodore went bankrupt, things went downill. When cinema 4d decided to stop support for the Amiga they gave away their Amiga version to the Amiga community. So I still should have an old copy of C4D somewhere. My Amiga was a really fast machine in those days with the PowerProcessor, I could fire up that old beast....