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Explain Pattern allowances.
written 8.9 years ago by gravatar for aksnitald aksnitald • 20 modified 3.7 years ago by gravatar for sagarkolekar sagarkolekar ★ 11k
production process
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written 8.9 years ago by gravatar for aksnitald aksnitald • 20 •   modified 8.9 years ago

Pattern is the replica of the casting to be produced. Replica means that shape of the pattern remains same as that of the shape of casting to be produced.

                              Pattern size=casting size±allowance

Pattern allowances are of five types

a. Shrinkage allowance

b. Machining allowance

c. Draft allowance

d. Shake allowance …

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