Taper thread turning 3

Thanks to tailstock offsetting the tool moves along a line that creates an angle α (half of taper angle) with the axis of rotation of the orange work. This method more suited for shallow tapers. Approximately, the set-over S = α L: distance between the blue centers α: half of taper angle The lathe is set to get when the chuck turns 1 revolution, the violet carriage moves L mm (thread lead). The tool is retrieved a little during the reverse stroke.