casting pattern 12 for producing a turbine engine blade is shown in fig3 and 4 this casting pattern 12 is thus in the shape of a turbine engine blade with a blade body 14 and a blade root 15 for fastening the blade to a turbine engine rotor the blade body 14 has a suction side 16 and a pressure side 17 that meet along a leading edge 18 and a trailing edge 19 a platform 20 lies between the blade body 14 and the blade root 15 the pattern 12 also has out of part elements and in particular an expansion strip 21 adjacent to the trailing edge 19 and an out of part segment 22 extending the blade body 14 at an end opposite from the blade root 15 this out of part segment 22 is for connection to the selector channel 9 and the blade root 15 is for connection to the feed channel 8 so that in the mold cavity 7 formed by the pattern 12 in the shell mold 1 the molten metal flows from the root of the blade 15 towards the blade body 14 during casting and subsequently solidifies in the opposite direction during its directional solidification the pattern 12 also has a refractory solid core 23 for the purpose of forming a cavity in the turbine engine blade on each side of the pattern 12 a varnished surface 31 of the core 23 is flush with the surface of the pattern 12 between the trailing edge 19 and the strip 21 as shown in fig5.