I recently read the Multiaxis Essentials training tutorial again. I found an error in the tutorial#1. My tutorial is the 2017 version. I'm not sure the new version still includes the same tutorial#1. This error is in example 2 -machine the conical helix. the conical helix example still use the same line in the cylindrical helix. this is the error I mentioned. actually conical helix line is shorter than cylindrical helix line. the cylindrical helix length is 26.38inches, the conical helix length is 23.4 inches. see the attached drawing