Hi! Posted this one a few months ago, but didn't get any clear answers: I'm trying to draw a pipe which tapers along a user defined path, but which starts with eliptical cross section, and finishes with circular cross section, morphing smoothly between the two. Is there any way to do this using existing AutoCAD2002 tools ? Any LISP routines or affordable 3rd party tools out there? Many thanks in anticipation Dave