something that might not be obvious when you consider 4th axis rotary is that this method is ideal and necessary when all points are not on the same diameter when spinning around an axis (not concentric to the axis). like a squarish handle could not be turned but could be cut with this 4th axis rotary. however when the part doesn't require it (like round shafts or perfectly round stock) this lack of spinning results in long programs, high cut times and poorer surface finish compared to lathe routing.

its too bad that vectric only has this fourth axis feature and can't cut the part in an X-Z lathe orientation. so at this point the software is only designed to cut the more complex shapes which is an inefficent way to cut basic shapes. maybe in a future version it would allow you to X-Z turn all concentric surfaces then in the same program convert into a 4th axis mode for fluting or other fine detials.