The scrap chopper consists of a travelling hydraulic shear. The cycle is initiated by a 'cut to length' sensor which signals the shear to begin the cut. After the cut is complete, the shear blade raises back up and the entire shear travels back to the home position. The reverse travel is effected by means of a hydraulic cylinder. The scrap pieces are dropped into a cart, which may be emptied at the operator's convenience. The operator can set the length of the scrap piece. One set of replaceable shear blades is provided.