metal spinning: precision tube bending: centerless grinding: Floturn Inc. metal spinning, tube bending, centerless grinding, metal bending, precision tube, diamond turning, flow forming, aluminum metal spinning, spun metal, stainless steel hoppers Floturn offers expert metal forming services on a contract basis. We can produce a huge variety of metal shapes using the processes of metal spinning, tube bending, centerless grinding, diamond turning, flow forming, ring forming, circle shearing and precision machining.