q can you explain pattern allowancesthe


Q. Can you explain Pattern Allowances?

The difference in the dimensions of the casting and the patterns is due to the various allowances considered while designing a pattern for casting:

  • Shrinkage allowance
  • Machining allowance
  • Pattern draft or taper
  • Corners and fillets
  • Rapping or shake allowance
  • Distortion allowance

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