A cutting tool comprising a handle and a cutting member for cutting or shearing a material, wherein the cutting member comprises: - a feed slot provided between a cutting blade and a co-operating counter-cutting blade or a counter-member, or provided between two cooperating cutting blades which for their cutting cooperation are placed with an acute angle between them, the cutting tool being further characterised by: - a guiding member with a discus-like shape formed by two convex surfaces (15, 16) on either side of a center plane through the guiding member, wherein the center plane is perpendicular to the plane containing the at least one cutting blade (6, 6', 7); where each of the two convex surfaces (15, 16) are bounded by a curved front edge (19, 35) and by a trailing edge (20, 34) that optionally is a curved edge or a rectilinear edge, wherein the curved edges (19, 34) are approximately semi-circular or semi-oval-shaped, wherein at least the front curved edges are joined together, wherein a recess is provided in the upper side of a first of the convex surfaces (15, 16), in which recess the at least one cutting blade (6, 6', 7) is arranged such that it extends above the first convex surface, said at least one cutting blade (6, 6', 7) being oriented with its cutting edge (6", 7") oriented towards the guiding members front end, and wherein the tool handle extends substantially parallel with the plane containing the at least one cutting blade (6, 6 ', 7) and is positioned with an extension above the second convex surface. - a feed slot provided between a cutting blade and a co-operating counter-cutting blade or a counter-member, or provided between two cooperating cutting blades which for their cutting cooperation are placed with an acute angle between them, the cutting tool being further characterised by: - a guiding member with a discus-like shape formed by two convex surfaces (15, 16) on either side of a center plane through the guiding member, wherein the center plane is perpendicular to the plane containing the at least one cutting blade (6, 6', 7); where each of the two convex surfaces (15, 16) are bounded by a curved front edge (19, 35) and by a trailing edge (20, 34) that optionally is a curved edge or a rectilinear edge, wherein the curved edges (19, 34) are approximately semi-circular or semi-oval-shaped, wherein at least the front curved edges are joined together, wherein a recess is provided in the upper side of a first of the convex surfaces (15, 16), in which recess the at least one cutting blade (6, 6', 7) is arranged such that it extends above the first convex surface, said at least one cutting blade (6, 6', 7) being oriented with its cutting edge (6", 7") oriented towards the guiding members front end, and wherein the tool handle extends substantially parallel with the plane containing the at least one cutting blade (6, 6 ', 7) and is positioned with an extension above the second convex surface. - a guiding member with a discus-like shape formed by two convex surfaces (15, 16) on either side of a center plane through the guiding member, wherein the center plane is perpendicular to the plane containing the at least one cutting blade (6, 6', 7);