It is desired to sand cast a part that is 500 mm long with a triangular base (the base of the

equilateral triangular end is 100mm) as shown in the figure below. The material used for the

casting is aluminum (density 2750 kg/m³). The cope and drag are 500 mm in height and density

of sand used is 400kg/m³. It is required to use a single-piece pattern with a parting line exactly

at the center of the mold. To save costs no clamping mechanism is allowed. The width and

length of cope are equal.

Hint: place the entire cast part in the drag of the mold.

a) Provide two cross sections (front and side) of the

mold with the part in it

b)

Find the dimensions of the cope required to cast

the part without the need for clamping

500 mm

100 mm

Figure: cast part with its dimensions