Additive Manufacturing, or 3D Printing refers to the set of processes for manufacturing physical objects directly from a digital model by adding material layer by layer. There are various processes, which can be distinguished by: • The way in which the various layers of material are deposited (fusion, sintering, polymerization, etc.) • The materials used: solids (metallic powders, polymers, grains, etc.), liquids (photosensitive resin, etc.), or even semi-finished products (ribbons, wires, etc.) Compared to conventional manufacturing technologies (machining, forging, deep drawing), these different processes make it possible to create products of almost any shape (customizable to the nearest unit, adaptable to large families of parts, etc.), even if these would not otherwise be possible (complex shapes, internal structures, lattices, etc.), using a far shorter machine and tool line.
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