_ If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be$?

_ If an aluminium pattern made from a wooden master pattern is to be u

1.	_ If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be$?
A.	10 mm/m
B.	16 mm/m
C.	20 mm/m
D.	26 mm/m
Answer» E.