Method of manufacturing three-dimensional object, liquid set for manufacturing three-dimensional object, device for manufacturing three-dimensional object, and gel object

A method of manufacturing a three-dimensional object, comprising:

• discharging onto a stage a first liquid for forming the three-dimensional object from a first discharging head and a second liquid for forming the three-dimensional object from a second discharging head, and a third liquid for forming a support structure from a third discharging head, such that the discharged first and second liquids are mixed on the stage and that a liquid film having multiple areas having different mixing ratios of the first and second liquids are formed on the stage, and that the third liquid is imparted to a site where the first liquid or the second liquid is not imparted;
• where the first liquid comprises water, a curable material, and a polymerization initiator, and the second liquid comprises a solvent to dilute the first liquid;
• and the third liquid is free of water and has a composition different from compositions of the first liquid and second liquid;
• curing the liquid film and the third liquid, on the stage;
• and
• repeating the discharging and the curing to obtain the three-dimensional object that is supported by the support structure,
• removing the support structure form the three-dimensional object
• wherein 80 percent compressive stress-strain, modulus of elasticity, or both, of the three-dimensional object has a continuous gradient, and
• the three-dimensional object is an internal organ model.