A machining method in a three-dimensional machining center of a blade (10) comprising an aerodynamic blade (18), a platform (12) under the upstream and downstream parts of which are formed respectively upstream and downstream supports (12A, 12B) for a sealing liner (20), a blade root (16) and a stilt (14) interposed between this platform and the blade root, in which the supports constitute two bearing points (22A , 22B) for a 6-point positioning system of the blade in the three-dimensional machining center.
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