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Tracing a ceramic defect to its root cause is best begun by

  • A.establishing at which process stage it could have formed
  • B.changing the firing schedule and then observing the result
  • C.replacing the raw material supplier without delay
  • D.increasing the rate of inspection on the finished ware

Answer: A

A defect that appears in the kiln may have been created in the press or the dryer, so the first task is to establish where it could and could not have arisen. Changing variables before that is done usually confuses matters further.

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