Thanks jim. I tried the multi axis flow toolpath and it still gave me a motion that followed the length of the part but made XZ moves to follow the contour with an A axis move I guess to control the stepover. It didn't make a helical move down the part.

This is my first post although I have monitored this forum for many years and have seen many unique solutions. Due to Customer and in-company security I cannot post a file so I will describe the part the best I can. It is a cylindrical part with a helical groove along the length,.05r .018 deep. The top edges are radiused with an edge break of .08. I would like to surface this entire form with a lollipop mill off center to eliminate the center of the tool cutting and leaving the line down the middle of the groove. This will be done on a vertical mill with true 4th axis. I want the tool to follow the part in length as the groove is cut. I am using MCX-6 MU3 for our system. What suggestions can you all give me?

Hi Ron, Thanks a lot for sharing the Verisurf program. Back when the initial Verisurf add-on for X4 was released, some people, including myself had problems with the post install. Strange artifacts from Verisurf made its way into Mastercam after the successful install such as when an error message would pop-up they would appear to come from Verisurf instead of Mastercam. Or, the Verisurf menu on the toolbar at the top would not show up until you moved the mouse over the title. A couple other strange things happened as well but I can't remember. In any event, a new add-on was released not long after that and it seemed to fix all these problems. Now, with the new X5 version you provided, it seems to do the same things again as did the X4 version. I was wondering if anyone else has seen any strange behaviour like this or can you recall what it was you did to fix these issues. I believe I obtained the download from the 3dgage site a long time ago, so I apologize if it is not the same download. Thanks for any help and thanks again for the software, U