The metal patterns as compared to wooden patterns require less

A Shrinkage allowance
B Machining allowance
C Draft allowance
D Distortion allowance

Correct Answer: Draft allowance

Draft Allowance: by draft is meant the taper provided by the pattern maker on all vertical surfaces of the pattern so that it can be removed from the sand without tearing away the sides of the sand mold and without excessive rapping by the molder.
The metal patterns as compared to wooden patterns require less draft allowance.
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