Multi-edged machining tool for post machining of bores or finishing tool, particularly a reamer, for treating deeper or several axially spaced bores of similar dimensions and quality, such as bores to get bearing bushes for a camshaft, with:: at least one cutting set with predetermined nominal diameter value and over the extent in particular evenly spaced blades (32-1 to 32-6) and a thereto axially offset guiding system arrangement, where the guiding system arrangement is an integral component of an existing particularly cylindrical guiding system made from Solid Carbide, which forms helically running guiding rails (38- 1 to 38-4) standing to each other at least in even circumferential spacing, where the guiding rails (38- 1 to 38-4) extend respectively over a central angle or wrap angle, which is greater than 360°/n, where: n > = 2, applies, characterized in that a nominal diameter value is assigned to the guiding rails (38- 1 to 38-4), which particularly around the double measure of a lubrication gap built in the insert of the tool is smaller than the nominal diameter value of the adjacent cutting set in the feed-direction, and where the tool is built modularly, where the guiding system over a shrink joint is connected on-one-side with a first blade module bearing the cutting set and on-the-other-side with a shaft part in a twist- and dislocation-proof manner, where between the cutting set and the guiding system lies an additional guiding set in the form of precisely positioned, preferably cylindrically cut cutting inserts (34-1 to 34-6), which align respectively with the blades (32-1 to 32-6) of the adjacent cutting set in advance direction of the tool axial and have a nominal diameter value, which particularly around the double measure of a lubrication gap built in the inset of the tool is smaller than the nominal diameter value of the adjacent cutting set in the feed-direction, where the measure, around which the nominal diameter value of the guiding rails and of the Guiding set is smaller than the nominal diameter value D of the adjacent cutting set in the feed-direction lies in the range between 0.0002 to 0.0016 x D, preferably in the range between 0.0002 to 0.0005 x D. at least one cutting set with predetermined nominal diameter value and over the extent in particular evenly spaced blades (32-1 to 32-6) and a thereto axially offset guiding system arrangement, where the guiding system arrangement is an integral component of an existing particularly cylindrical guiding system made from Solid Carbide, which forms helically running guiding rails (38- 1 to 38-4) standing to each other at least in even circumferential spacing, where the guiding rails (38- 1 to 38-4) extend respectively over a central angle or wrap angle, which is greater than 360°/n, where: n > = 2, applies, characterized in that a nominal diameter value is assigned to the guiding rails (38- 1 to 38-4), which particularly around the double measure of a lubrication gap built in the insert of the tool is smaller than the nominal diameter value of the adjacent cutting set in the feed-direction, and where the tool is built modularly, where the guiding system over a shrink joint is connected on-one-side with a first blade module bearing the cutting set and on-the-other-side with a shaft part in a twist- and dislocation-proof manner, where between the cutting set and the guiding system lies an additional guiding set in the form of precisely positioned, preferably cylindrically cut cutting inserts (34-1 to 34-6), which align respectively with the blades (32-1 to 32-6) of the adjacent cutting set in advance direction of the tool axial and have a nominal diameter value, which particularly around the double measure of a lubrication gap built in the inset of the tool is smaller than the nominal diameter value of the adjacent cutting set in the feed-direction, where the measure, around which the nominal diameter value of the guiding rails and of the Guiding set is smaller than the nominal diameter value D of the adjacent cutting set in the feed-direction lies in the range between 0.0002 to 0.0016 x D, preferably in the range between 0.0002 to 0.0005 x D.