The invention concerns a method for manufacturing a structure (151) from a granular material, called sand, in particular a mould, comprising the steps consisting of: i. depositing a layer of sand;ii. selectively agglomerating the layer of sand by spraying, by means of a spray nozzle, an inorganic binder comprising an M2SiO3 type (meta)silicate dissolved in a solvent;iii. wherein, prior to its spraying, the inorganic binder is heated to a temperature able to confer on it a viscosity less than 0.2 Pa.s.The invention also concerns a device for implementing this method.
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