It is easy to think about biscuits at this time of year. My wife and I bake a whole bunch of them to pass around at this time of year. As this Gigacasting image shows the casting operator was also thinking about other types of biscuits.
Control of biscuit thickness is normally a significant process control variable. Even if the molten metal delivery device is able to accomplish perfect weight dosing, other causes of biscuit length variation must be controlled. Die blow and flashing also vary casting weight which show as a biscuit thickness variation Usually a minimum biscuit thickness is needed to insure that molten metal is available to fill in porosity as the metal shrinks during solidification. This is most important when you are producing aluminum castings that are pressure tight. Fortunately structural gigacasting castings usually do not have a leak tight requirement. This probably explains why this gigacasting has a non traditional biscuit shape. It probably also explains why it is possible to place less emphasis on biscuit thickness control