It’s a cliche that the only machine tool that can make copies of itself is the lathe. It’s not exactly true, but it’s a useful adage in that it points out that the ability to make big round things ...
CNC turning is a subtractive manufacturing method (Removal of Material). Contrary to CNC Milling, Lathe machining is for circular geometries (stock is commonly a solid/hollow cylinder) but a hexagon ...