There is no need for the withdrawal of pattern from the mould in case of
A)patterus with core
B)wax patterns
C)hollow patterns
D)consumable patterns

Question

Quizplus · Accepted Answer

Consumable patterns, such as those made from materials like polystyrene in lost-foam casting, are designed to be consumed or evaporate when the molten metal is poured into the mold. Therefore, there is no need to withdraw these patterns from the mold as they are eliminated during the casting process.

There Is No Need for the Withdrawal of Pattern from the Mould