1)

2)3)4)

In a metal casting process to manufacture parts, both pattern and moulds provide shape by dictating where the material are should and should not go. Which of the option(s) given correctly describe(s) the mould and the pattern? (A) Mould walls indicates boundaries within which the molten part material is allowed while pattern walls indicates boundaries of regions where mould material is not allowed. (B) Moulds can be used to make patterns G A TE (C) Pattern walls indicates boundaries within which the molten part material is allowed while mould walls indicates boundaries of regions where mould material is not allowed. (D) Patterns can be used to make moulds