When a mould is made in three parts, the top part, is known as a

Concept:

• Cope and Drag refer to the two halves (top and bottom, respectively) of a Pattern or Mold that is used in sand moulding.
• The two halves of the pattern must be aligned properly by making use of the dowel pins, which are fitted, to the cope half of the pattern.
• These dowel pins match with the precisely made holes in the drag half of the pattern.
• The line separating the two halves is known as the Parting Line.
• Sometimes moulding box contains three parts at that time middle part is known as the cheek.