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The accompanying illustration shows a cast-steel valve body (left) that is machined to the shape shown on the right. Identify the surfaces that are to be machined. What type of

machine tool (Lathe, Drilling Machine, ... etc.) would be suitable to machine this part? What type of machining operations are involved and what is the sequence of these operations (try to present your answer using clear sketches).

Fig: 1

Fig: 2