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A Design Study in Ductile Iron - Dotson Company Pivot Frame

Mold Cores
Cores are preformed sand shapes inserted into the mold to produce interior and exterior features in the casting.

Red Polyurethane Core Box for Forming 
Two of the Center Cores

Dotson foundry engineers use six (6) cores to produce the interior features on the pivot plate frame.  

  • Four center cores for forming the pivot plate, center bore, and the square frame.  

  • Two pin cores for the center bores on the mounting bushings. 


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Copyright 2005 by the American Foundry Society. All rights reserved.
Address Comments to: jss@afsinc.org
Last Modified:September, 2005 by STG

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In cooperation with
The Dotson Company.