The allowance provided to a pattern for easy withdrawal from a sand mold is

Aluminium is casted in a cube-shaped mold having dimensions as 20 m m × 20 m m × 20 mm. Another mold of the same mold material is used to cast a sphere of alumi...

In a metal casting process to manufacture parts, both patterns and moulds provide shape by dictating where the material should or should not go. Which of the op...