The present invention relates to a curing tool (30) for a shell component (10), comprising a first tool component (31), which is cuboid and has a wedge-shaped bevel forming a first sheared edge (34) on a first side edge, and a second tool component (32), which is cuboid, has a wedge-shaped bevel forming a second sheared edge (35) on a first side edge and has a first corner bevel (33) on a second side edge diagonally opposite the first side edge. The wedge angles of the first and the second sheared edge are equal.