CONTROLLING COPPER-CONTAINING GREEN BODY OBJECT DEFORMATION

A three-dimensional printing kit can include a particulate build material with from about 80 wt % to 100 wt % copper-containing build particles having a D50 particle size distribution value from about 1 μm to about 150 μm, a binding agent including a build binder to apply to particulate build material layers to form a green body object, and a shaping composition to apply to a surface of the green body object and to control green body object deformation. The shaping composition can include from about 10 wt % to about 80 wt % liquid vehicle and from about 20 wt % to about 90 wt % metal shaping particles having a D50 particle size distribution value from about 100 nm to about 100 μm. The metal shaping particles can be smaller than the copper-containing build particles.