A tool includes a parent body (12) and at least two cutting inserts (14) fastened directly or indirectly to the parent body (12). A central clamping device (30) is configured to clamp the cutting inserts (14) in an oriented position relative to the parent body (12). An assembly includes the tool (10) and a jig (32), which can accommodate the tool (10) in such a way that the cutting insert (14) is located in a desired position on the tool (10) and can be clamped in the desired position by actuating the clamping device (30). A method for fastening at least one cutting insert (14) to the parent body (12) includes fitting the parent body (12) with the cutting insert (14); arranging the parent body (12) in a jig (32); bringing the cutting insert (14) into a desired position; and clamping the cutting insert (14) in the desired position.