The conceptual stage design is very crucial in a design phase because maximum flexibility lies in this stage. The product can be changed or redesigned to achieve the optimum blend of quality and cost. The factors that influence the design include: shape complexity factor of the product, material, and processing parameters. In the casting design, the shape-complexity factor plays a vital role in deciding the location of the gates and risers and hence in feeding system design. Feature based design is adopted for the evaluation of the shape complexity factor. The implementation of this design approach is also discussed.

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