Abstract: The invention proposes a device for three-dimensional printing of a glass object, by applying and solidifying successive layers of a material constituting the glass, in locations corresponding to the section of the object to be produced in the corresponding layer, by means of a laser producing a beam whose wavelength allows the direct fusion in the core of the material. The device comprises: means for supplying the material to a support on which the successive layers are formed; means for thermal regulation of the successive layers for holding their temperature during the production of the object and for cooling them after the production of the object; a central unit controlling the laser. The printing device comprises means for servo-controlling the power and the speed of the laser in real time.