Chip build-up

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  Make the grinding stone contacted with the workpiece surface
  that the actual grinding process occurs.

• 

  While reciprocating and rotating the grinding stone or the workpiece
  the bond wears less, so chips are not removed properly.

• 

  The grinding stone is covered by a build-up of chips.

• 

  This process that the grinding stone is covered by a build-up
  of chips and can not grind the workpiece is called Chip build-up.