Finishing allowance to a pattern is generally provided to avoid various defects in the casting.(a) True(b) FalseThe question was posed to me in quiz.This key question is from Finishing Patterns & Storing of Patterns in section Pattern and Pattern Making of Casting-Forming-Welding I

Finishing allowance to a pattern is generally provided to avoid variou

1.	Finishing allowance to a pattern is generally provided to avoid various defects in the casting.(a) True(b) FalseThe question was posed to me in quiz.This key question is from Finishing Patterns & Storing of Patterns in section Pattern and Pattern Making of Casting-Forming-Welding I
Answer» Right choice is (b) False Explanation: Finishing allowance is generally provided for a MACHINING process, the FINISH and accuracy achieved in sand casting are usually poor and therefore when the casting is FUNCTIONALLY required to be of better surface finish, so the machining is required that is accomplished by PROVIDING finishing or machining allowance.

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