To provide an apparatus for cutting capable of smoothly cutting or scraping without slip between a driving pulley and a wire saw, and capable of enlarging a cutting width by decreasing the amount of wire saw's sag.

The apparatus comprises a plurality of pulley supporters 1, 1 extending parallel each other with a distance, front pulleys 7, 7 axially supported by the tips of the pulley supporters 1, 1, a rear pulley 12 axially supported backward apart from the front pulley 7 by at least one pulley supporter 7, a wire saw 13 wound endlessly around each pulley 7, 12, a tension applying means for applying a tension to the wire saw 13, and a driving motor circularly running the wire saw 13 wherein the wire saw 13 is wound by a plurality of stages between two adjacent pulleys 7, 7 and a driving motor is connected for driving to at least one of the two adjacent pulleys 7, 7 around which the wire saw is wound by a plurality of stages.