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Eddie Bell

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Eddie Bell

Article
The Sprue System Design

A very high percentage of investment casting defects can be directly or indirectly attributed to the design of the sprue system feeding metal to the pattern. Defects such as incomplete pattern filling and shrinkage porosity are easily identified…

Article
What Causes Casting Marks?

In the Spring 2003 Issue we asked the question “What causes these marks on this casting?” Around 100 readers responded to the question. Everyone that responded said the same thing; Water Marks. Investment needs to be finished…