A binder solution (36) comprises greater than or equal to 0.5 wt% and less than or equal to 20 wt% of nanoparticles (36a), a thermoplastic binder (36b), and a solvent. The nanoparticles (36a) may comprise metallic nanoparticles comprising nickel, silver, chromium, aluminum, cobalt, iron, or combinations thereof. The nanoparticles (36a) may comprise ceramic nanoparticles, the comprising alumina, aluminum nitride, zirconia, titania, silica, silicon nitride, silicon carbide, boron nitride, or combinations thereof. A method (10) of manufacturing a part includes depositing a layer (22) of particulate material (24) on a working surface (32), selectively applying a binder solution (36) into the layer (22) of particulate material (24) in a pattern representative of a layer of the part, repeating the steps of depositing and selectively applying to form a plurality of layers (22) of particulate material (24) with the applied binder solution (36), and curing the applied binder solution (36) in the plurality of layers (22) of particulate material (24) with the applied binder solution (36) to evaporate the solvent and thereby form a green body part (60).
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