An injection mold producing a model of a turbine engine blade, including: a top surface that folds onto a bottom surface, both surfaces including long rods for supporting a core generating cooling cavities inside the blade, wherein the long rods of the bottom surface are configured to contact a first surface of the airfoil at bearing points, and the long rods of the top surface are configured to contact a second surface of the airfoil at clamping points; at least one short rod extending from one of the surfaces of the mold and pointing towards a false point located on one of the surfaces of the airfoil, the length of the short rod being shorter than the distance between the surface of the mold and the surface of the blade at the false point, and the difference between the length and the distance being equal to tolerance in relation to positioning of the false point in event of deformation of the core.