https://forums.autodesk.com/t5/autocad-forum/sweeping-on-a-helical-path/m-p/5454397#M344955 <P><A href="http://home.pct.edu/~jmather/content/CAD238/AutoCAD%202007%20Tutorial%204.pdf" target="_blank">http://home.pct.edu/~jmather/content/CAD238/AutoCAD%202007%20Tutorial%204.pdf</A></P> <P>&nbsp;</P> <P>I could not find a proper profile in your file, but there were so many distractors (geometry not relevant to the problem description) that I might have gotten lost in the search.</P> <P>&nbsp;</P> <P>Try the instructions in the link above.</P> <P>&nbsp;</P> <P>If you still can't get it to work - attach a file with only your cylinder, helical path and thread profile in the file.</P> Mon, 29 Dec 2014 12:39:05 GMT JDMather 2014-12-29T12:39:05Z