Method for machining a face (1) of an optical object (6), comprising a step of providing a machine tool which itself comprises: a bed (1) for locating an object to be machined, this bed (1), which has a receiving surface (3), being angularly adjustable about an axis perpendicular to the receiving surface (3); a spindle (8) suitable for rotating a machining tool (9) about an axis essentially parallel to the receiving surface (3) of the bed (1) and suitable for moving this machining tool (9) translationally in a plane essentially parallel or perpendicular to the receiving surface (3) of the bed (1).