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Visualize the Casting in the Mold

It can be difficult to follow all section changes and shapes from a blueprint. By creating a three-dimensional drawing or constructing a small model, an engineer can study how the metal will enter the mold, discover how solidification proceeds and define how parts must be fed to assure casting soundness.

A model to scale or a full-size pattern can be used later to help the designer see how cores must be designed, placed or omitted. It also will help the foundry to determine how to mold the casting, detect casting weakness (shrinks and cracks), where to place gates and risers, and answer other questions affecting casting soundness, cost and delivery.

Next: Rule 2. Design for Soundness >>
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10 Rules for Engineered Quality

This article was adopted from a section of Casting World Magazine. Reprinted with permission.