A method for ramming up moulds for metal casting in a vertical parting surface ram-up machine comprising: - after completing a squeeze of a mould block for metal casting, the mould block is pushed to an intermediate position, a swing plate carrying a second mould pattern is separated from the mould block by a translatory move to a released position and then pivoted upwardly to a sidestep position, - the mould block is pushed out of the ram-up machine by horizontally movable piston operating the squeeze plate carrying a first mould pattern, - after pushing the mould block out, the squeeze plate returns to an initial position to be ready for mould sand to be supplied, - the swing plate is pivoted downwardly to the released position and then moved translatory to a ram-up position, - the mould sand forming the mould block is supplied to a space formed between the squeeze plate located in the initial position and the swing plate located in the ram-up position, - the squeeze plate and/or swing plate are moved toward each others so that the loose mould sand is rammed up or compressed to form the mould block, characterised in that, - after the swing plate carrying the second mould pattern is pivoted upwards to the sidestep position and the sqeeze plate is removing the finished mould block, one or plurality of feeder elements are attached substantially vertically to the second mould pattern, - when the swing plate is pivoted again downwards and moved to the ram-up position, the feeder elements are located in substantially horizontal direction in their positions, - the supplied mould sand covers the feeder elements and when the mould sand is compressed, a cavity inside the feeder element forms a part of mould cavity in the mould block. - after completing a squeeze of a mould block for metal casting, the mould block is pushed to an intermediate position, a swing plate carrying a second mould pattern is separated from the mould block by a translatory move to a released position and then pivoted upwardly to a sidestep position, - the mould block is pushed out of the ram-up machine by horizontally movable piston operating the squeeze plate carrying a first mould pattern, - after pushing the mould block out, the squeeze plate returns to an initial position to be ready for mould sand to be supplied, - the swing plate is pivoted downwardly to the released position and then moved translatory to a ram-up position, - the mould sand forming the mould block is supplied to a space formed between the squeeze plate located in the initial position and the swing plate located in the ram-up position, - the squeeze plate and/or swing plate are moved toward each others so that the loose mould sand is rammed up or compressed to form the mould block, - after the swing plate carrying the second mould pattern is pivoted upwards to the sidestep position and the sqeeze plate is removing the finished mould block, one or plurality of feeder elements are attached substantially vertically to the second mould pattern, - when the swing plate is pivoted again downwards and moved to the ram-up position, the feeder elements are located in substantially horizontal direction in their positions, - the supplied mould sand covers the feeder elements and when the mould sand is compressed, a cavity inside the feeder element forms a part of mould cavity in the mould block.