Abstract: A method for producing a casting core including: producing a casting core insert having a side surface section that is equal to a corresponding section of a side surface of the casting core from a casting core molding material; positioning the casting core insert in a mold cavity of a core box with the side surface section of the casting core insert in the place of the corresponding section of the side surface of the finished casting core, wherein a parting plane intersects the side surface section; introducing a casting core molding material into the mold cavity of the core box to form the remainder of the casting core, wherein the introduced casting core molding material comes into contact with the casting core insert; and solidifying the casting core molding material, thereby forming a shape-fit and/or material-fit connection between the introduced casting core molding material and the casting core insert.

Abstract: The invention names a method for producing a lost casting core (G), which has a side surface (S1, S2), in a core box (1) that is divided into two core box parts (2, 3) in a parting plane (T), and which box delimits a mold cavity (8) in which an inner surface (14, 15) that reproduces the side surface (S1, S2) of the casting core (G) is provided, through which surface the parting plane (T) of the core box (1) runs.