https://forums.autodesk.com/t5/alias-forum/profile-tool-problems/m-p/6645340#M7430 Hello. Could somebody please tell me under which criterias the profile tool is picking the orientation in which the profile is build. What I mean is. I have two profile curves in space (not connected to the rail curve) and one generation curve.<BR />So from now and then the problem occurs when building the surface that the surface will twist to some kind of x shaped self intersecting surface. I already checked the orientation of the profile curves and they show to the same direction. So i dont know what else could be the problem . Any help would be greatly appreciated. Tue, 25 Oct 2016 20:44:26 GMT Anonymous 2016-10-25T20:44:26Z https://forums.autodesk.com/t5/alias-forum/profile-tool-problems/m-p/6645340#M7430 Hello. Could somebody please tell me under which criterias the profile tool is picking the orientation in which the profile is build. What I mean is. I have two profile curves in space (not connected to the rail curve) and one generation curve.<BR />So from now and then the problem occurs when building the surface that the surface will twist to some kind of x shaped self intersecting surface. I already checked the orientation of the profile curves and they show to the same direction. So i dont know what else could be the problem . Any help would be greatly appreciated. Tue, 25 Oct 2016 20:44:26 GMT https://forums.autodesk.com/t5/alias-forum/profile-tool-problems/m-p/6645340#M7430 Anonymous 2016-10-25T20:44:26Z https://forums.autodesk.com/t5/alias-forum/profile-tool-problems/m-p/6645344#M7431 Sorry two profile curves and one rail curves is what I meant. Tue, 25 Oct 2016 20:45:43 GMT https://forums.autodesk.com/t5/alias-forum/profile-tool-problems/m-p/6645344#M7431 Anonymous 2016-10-25T20:45:43Z https://forums.autodesk.com/t5/alias-forum/profile-tool-problems/m-p/8109356#M7432 <P>If there are several profile curves, they will always be oriented internally to get a common parameter direction. Maybe you have a special configuration, which is not yet handled correct. Hence an example (maybe a picture) would be helpful to improve the behavior.</P> Wed, 04 Jul 2018 13:24:09 GMT https://forums.autodesk.com/t5/alias-forum/profile-tool-problems/m-p/8109356#M7432 matthias.radeck 2018-07-04T13:24:09Z