Question 4 (a) In terms of machining (subtractive manufacturing), how is turning different to milling? (b) In terms of geometric component design, in what ways is additive manufacturing superior to say casting processes. (c) In what case might surface grinding be used in preference to milling? (d) In terms of waste, surface finish and finished tolerance, compare multi- axis subtractive manufacturing to selective laser melting of metal components. (e) What aspects of the additive manufacturing process of metals from powder materials affect the mechanical properties of the final component