topic Re: sweep error message, Unable to create a valid body because .... in AutoCAD Forum

topic Re: sweep error message, Unable to create a valid body because .... in AutoCAD Forum https://forums.autodesk.com/t5/autocad-forum/sweep-error-message-unable-to-create-a-valid-body-because/m-p/6989063#M309357 i too have this issue: in my JPG example, a wavy (3 arcs) magenta polyline is on the top surface of a triangular base "cut from thick wood sheet" (base has a red top edge, green bottom edge) - this wavy magenta polyline is my path for sweeping. My aim was to create a solid ramp down from the magenta path, all maximally sloping in the X direction, not perpendicular to the path, even if my first drawings anchored the profile orthogonal to the midpoint of the wavy path - i've tried positioning the profile over the path in different places in case the start conditions were being misinterpreted.The small closed red polyline is made of a sharp triangle with a square added to its shortest end.i cannot sweep this red polyline profile along the magenta wavy path - msg:Modeling Operation Error:     Unable to create a valid body because a lateral edge starts off of the profile in the opposite direction of the sweep direction.But i CAN sweep a triangle, square, rectangle, circle drawn in the same plane as my red polyline,and i can see the effect of Base point, Alignment options in those profiles... <img src="https://forums.autodesk.com/t5/image/serverpage/image-id/340112iBCA79AAF7B13510C/image-size/large?v=v2&px=999" role="button" title="sweep error.jpg" alt="sweep error.jpg" />(my base point is where the square meets the top of the hypotenuse and Alignment is No). For a laugh, i recreated the closed polyline profile using lines in different directions! - no use. I can create other bizarre profile shapes from straight lines and sweep those, just not the profile i need... except I did get some sweeping earlier, but only perpendicular to the path, regardless of Alignment... i think i smell a UCS issue - but why do other profiles work?! Help!  Sat, 01 Apr 2017 13:47:32 GMT Anonymous 2017-04-01T13:47:32Z