Ok, well I have been using mastercam 9.1 for milling and x3 for wire. I can get by with doing 2D wire programs, but I recently got a job where I need to EDM a drafted surface with 2 teeth. I can supply an altered file for someone to look at. Basically it is a gripper for bottles. I can program it ok in 2D but It does not fully follow the correct profile that I want. I selected my chain and just added a taper, But is there anyway I can just use the 3D file and select the surfaces for the program and have the XY and UV axis follow that instead... or select a top and bottom chain together? If anyone has any suggestions I would greatly appreciate the help. I have never had any training on Mcam, just figured most of it out on my own, but now I have encountered something I can not figure out. If you want to look at the file, just let me know and let me know what file format you need... like Binary.x_t,, .iges. or any other ext. I can supply whatever. Thanks for your help.