The main object of the invention is an additive-manufacturing device (1) for creating a three-dimensional object (2), characterized in that it comprises a material selection unit (3), the materials including materials for the creation of the three-dimensional object (2), an induction heating unit (4) for heating the materials, the selection unit (3) being able to convey the materials toward the heating unit (4) which causes them to melt, and a material deposition unit (5) which ejects the materials after they have passed through the heating unit (4) onto a support (6) so as to allow the three-dimensional object (2) to be built up in successive layers of material.