Single-piece feeder body for use in metal casting

A single-piece feeder body (1) for use as a component of a two-part or multi-part telescopic feeder insert (40, 40′) in metal casting,

• having a feeder wall (2) which at least partially delimits a feeder cavity (42, 42′) for receiving liquid metal, wherein the feeder wall (2) has
• a passage opening (12) for the liquid metal into the feeder cavity (42, 42′), and
• an outer surface (6) on which there are arranged at least one outwardly projecting holding element (10) and at least one guide part (8) with a sliding section (14) for a feeder element (20, 20′), wherein an inner side of the feeder element (20, 20′) corresponds with an outer surface of the feeder wall of the feeder body (1),
• wherein the guide part (8) has a supporting section (16) which protrudes outwardly on the outer surface (6) and which, adjoining the sliding section (14) of the guide part (8) for guiding the feeder element (20, 20′), extends in the direction of the passage opening (12);
• and
• wherein the sliding section (14) has a sliding surface (34) and the supporting section (16) has a terminating surface (36), wherein the sliding surface (34) runs so as to be inclined at an angle (α1) with respect to the central axis (26), and the terminating surface (36) runs so as to be inclined at an angle (α2) with respect to the central axis (26) of the passage opening (12), wherein the angles (α1, α2) open in opposite directions;
• whereby when the feeder element (20, 20′) slides down the sliding section (14) towards the passage opening (12), the terminating surface (36) does not come into contact with the inner side of the feeder element (20, 20′).