Question 5

(a)        State the reason for using the following:
                        (i)         facing sand;
                        (ii)        split pattern.
(b)        State one possible cause of each of the following sand casting defects:
                        (i)         hot shot;
                        (ii)        inclusions.
(c)        With the aid of sketches, explain how the following tools are used:
                        (i)         centre punch;
                        (ii)        odd-leg callipers.