Core release spray application method and apparatus

摘要

A method for forming a core includes the step of providing a corebox defining in a closed configuration thereof a closed internal core-forming cavity and providing at least one external opening through the corebox into said cavity in the closed configuration ( 902 ). A core release substance is applied through the opening directly onto at least one surface of the closed core-forming cavity with the corebox in the closed configuration ( 904 ). A forming material is added to the cavity ( 906 ) followed by an addition of a core bonding agent ( 908 ). A core that has formed in said closed core-forming cavity is allowed to dry and removed from the cavity ( 910 ).