A crushing/breaking apparatus comprising: a frame including a pair of frame side plates (2a, 2b); a one side tool apparatus an upper face of which is axially fixed to the frame between the frame side plates (2a,2b); an other side tool apparatus disposed between the side plates (2a,2b) and opposite the one side tool apparatus, a lower side of which is axially fixed, the other side tool apparatus being movable relative to the frame by a cylinder provided at the frame by constituting a fulcrum (5a,5b) by an axially fixed portion thereof; wherein the other side tool apparatus includes an other side tool support base and an other side tool post, each of the other side tool support base and the other side tool post being disposed between the pair of frame side plates (2a,2b); wherein at least one of the other side tool support base and the other side tool post includes a pair of sliding faces (500,510) configured for sliding contact with respective frame side plates (2a, 2b); and wherein casting waste is broken by the one side and other side tools (42,52) provided at one side and other side tool posts (41, 51) arranged at the one side and the other side tool apparatus (4, 5) being brought into an opposed relationship, and the broken casting waste is discharged from a discharge port of the one side and the other side tool apparatus (4,5); characterised in that the sliding faces (500,510) each include a cut recess portion (500a,510a) extending along a length of the sliding faces (500,510), from the upper to the lower sides thereof, the cut recess portions (500a, 510a) including an overlay weld (500b, 510b) thereon; and in that said overlay weld (500b, 510b) is polished to be substantially flush with the sliding faces (500, 510). a frame including a pair of frame side plates (2a, 2b); a one side tool apparatus an upper face of which is axially fixed to the frame between the frame side plates (2a,2b); an other side tool apparatus disposed between the side plates (2a,2b) and opposite the one side tool apparatus, a lower side of which is axially fixed, the other side tool apparatus being movable relative to the frame by a cylinder provided at the frame by constituting a fulcrum (5a,5b) by an axially fixed portion thereof; wherein the other side tool apparatus includes an other side tool support base and an other side tool post, each of the other side tool support base and the other side tool post being disposed between the pair of frame side plates (2a,2b); wherein at least one of the other side tool support base and the other side tool post includes a pair of sliding faces (500,510) configured for sliding contact with respective frame side plates (2a, 2b); and wherein casting waste is broken by the one side and other side tools (42,52) provided at one side and other side tool posts (41, 51) arranged at the one side and the other side tool apparatus (4, 5) being brought into an opposed relationship, and the broken casting waste is discharged from a discharge port of the one side and the other side tool apparatus (4,5); characterised in that the sliding faces (500,510) each include a cut recess portion (500a,510a) extending along a length of the sliding faces (500,510), from the upper to the lower sides thereof, the cut recess portions (500a, 510a) including an overlay weld (500b, 510b) thereon; and in that said overlay weld (500b, 510b) is polished to be substantially flush with the sliding faces (500, 510).