A molding element for a tire mold manufactured from a metallic powder fused together layer by layer. The molding element contains a first surface intended to mold all or part of a tread surface of the tire and a second surface opposite to the first surface and intended to be in contact with another part of the mold. The thickness (E) of the molding element is between 1 and 6 millimeters. The molding element overall has a density greater than or equal to 98%. The molding element also contains at least one first porous area extending into the thickness of this molding element, this first porous area having a plurality of pores allowing air to pass between the first surface of the molding element and the second surface thereof.