A blade arrangement for a cutting roll of a sheet cutter suitable for a pulp drying machine, which cutting roll includes a roll shell recess comprising a counter surface for the blade arrangement and fastening elements for fastening the blade arrangement to the counter surface of the cutting roll, wherein the blade arrangement includes: - an elongated cutting blade for cutting a pulp sheet, adapted to be fastened in the recess of the cutting roll, - an elongated guide strip adapted to support the cutting blade against the counter surface, with the guide strip comprising openings for fasteners, - fasteners comprising a head for fastening the guide strip to the counter surface by means of the fasteners through openings in the guide strip, and - adjustment elements for positioning the guide strip in the radial direction of the cutting roll, wherein the guide strip includes a longitudinal blade recess for the cutting blade, formed on the side opposite to the guide strip relative to the head of each fastener, said guide strip being adapted to lock the cutting blade between the guide strip and the counter surface by means of friction locking, and wherein the cutting blade includes two support surfaces in the longitudinal direction of the cutting blade, adapted to be set against the guide strip and the counter surface, and two edge surfaces of the cutting blade, each edge surface of which has one blade edge, with the edge surfaces being parallel, enabling the turning of the cutting blade 180° around its longitudinal axis to replace the cutting blade edge. - an elongated cutting blade for cutting a pulp sheet, adapted to be fastened in the recess of the cutting roll, - an elongated guide strip adapted to support the cutting blade against the counter surface, with the guide strip comprising openings for fasteners, - fasteners comprising a head for fastening the guide strip to the counter surface by means of the fasteners through openings in the guide strip, and - adjustment elements for positioning the guide strip in the radial direction of the cutting roll, wherein the guide strip includes a longitudinal blade recess for the cutting blade, formed on the side opposite to the guide strip relative to the head of each fastener, said guide strip being adapted to lock the cutting blade between the guide strip and the counter surface by means of friction locking, and wherein the cutting blade includes two support surfaces in the longitudinal direction of the cutting blade, adapted to be set against the guide strip and the counter surface, and two edge surfaces of the cutting blade, each edge surface of which has one blade edge, with the edge surfaces being parallel, enabling the turning of the cutting blade 180° around its longitudinal axis to replace the cutting blade edge. wherein the guide strip includes a longitudinal blade recess for the cutting blade, formed on the side opposite to the guide strip relative to the head of each fastener, said guide strip being adapted to lock the cutting blade between the guide strip and the counter surface by means of friction locking, and wherein the cutting blade includes two support surfaces in the longitudinal direction of the cutting blade, adapted to be set against the guide strip and the counter surface, and two edge surfaces of the cutting blade, each edge surface of which has one blade edge, with the edge surfaces being parallel, enabling the turning of the cutting blade 180° around its longitudinal axis to replace the cutting blade edge.