Rolls-royce Corporation

John W Harrison

Jagnandan K Bhangu

An investment mould process for forming a cast member is described. The process comprises forming a precursor casting () from a master mould (). The master mould () has an internal surface () defining a space () in which the precursor casting () can be formed. The surface () defines a location indentation () to provide a corresponding location projection () on the precursor casting (). A holding member () can be inserted into the location projection () to hold an internal member (A,B).

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Derby, United Kingdom

John W Harrison