Young People’s Page

By Sheldon Jones
Published on July 1, 1971
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Torque Power hive Steam Models Hyattstown, Box 144-D R. F. D.,
Ijamsville, Maryland 21 754

Hi There Young Engineers:

In the last article I did not get to the subject of coring which
is something of an art in itself. Cores are used to hollow out a
portion of a casting such as a cylinder bore, the steam chest, and

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