OLFA-Curved Carving Art Blades. Curved carving blades are ideal for use in a multitude of applications where carving through delicate materials and intricate cuts are required! This blade, made from high quality carbon tool steel, is produced using OLFA's precise multi-step production process for unparalleled sharpness and superior edge retention. This package contains five curved carving art blades measuring 38x8mm. Imported.