Developing surfaces perpendicular towards the workpiece axis is referred to as dealing with. Generating surfaces working with each radial and axial feeds is termed profiling.[thirteen] Copper ore, staying relatively considerable, and tin ore turned the next critical substances during the story of metalworking. Employing warmth to smelt copper from ore, https://www.n49.com/biz/6230772/hand-crafted-metalworks-ca-santa-ana-2004-s-susan-st/