Method of producing a part by decomposition into layers, said part having fluid transfer channels extending through the inter-layers thereof

A process for manufacturing a part, the process comprising:

• forming a mould having a plurality of inter-stratum planes, said plurality of inter-stratum planes of said mould defining a cavity therein, each of said plurality of inter-stratum planes having a channel thereon so as to open to said cavity, each of the channels having a wide slot and a diffusion portion, the diffusion portion being formed with a primary bearing zone and formed with a plurality of diffusion ducts, each of the channels opening at one end to said cavity and at another end to a rear face of the mould;
• decomposing said plurality of inter-stratum planes of said mould into a succcession of strata;
• assembling successively the strata to form said mould;
• and
• manufacturing the part by transferring a fluid through the channels into said cavity so as to flow from one side to another side of said cavity.