However the porosity network and its structuration according to the printing-direction cannot explain in itself the effect of the printing trajectory on the tensile properties. The mean properties of the [90°] specimens indeed appeared to be quite similar to those of the [0°/ −90°] and [45°/45°] ones, despite the higher porosity volume fraction and the largest porosity connectivity distances. The difference in the cohesion forces between two successive droplets of a same bead or between two adjacent beads of a same layer can also be an important factor to explain the strong anisotropy of the tensile properties in the case of the unidirectional printing (0° and 90°).