Parts of a Sand Mold

• Flask


  The box containing the mold
• Cope


  The top half of any part of a 2-part mold
• Drag


  The bottom half of any part of a 2-part mold (additional parts are called cheeks)
• Core


  A shape inserted into the mold to form internal cavities or lettering on the surface of casting
• Core Print


  A region used to support the core
• Mold Cavity


  The hollow mold area in which metal solidifies into the part
• Riser


  An extra cavity that stores and supplies additional metal to the casting as it shrinks during solidification (blind riser and open riser)
• Gating System


  Channels used to deliver metal into the mold cavity
• Pouring Cup


  The part where molten metal is poured
• Sprue


  Vertical channel through which molten metal flows downward
• Runners


  Horizontal channels
• Parting Line / Parting Surface


  Interface that separates the cope and drag of a 2-part mold
• Draft


  Taper on a pattern or casting that allows removal from the mold
• Core Box


  Mold or die used to produce cores