A manufacturing method for a three-dimensional object, a kit for manufacturing a three-dimensional object and a three-dimensional object are provided. The manufacturing method for the three-dimensional object uses a laminate forming method using an ink jet scheme, and a radically polymerized ultraviolet curing ink having an elongation percentage within twelve hours after a curing of 130% or greater but less than 300% is used as a modeling agent. Further, in the manufacturing method for the three-dimensional object, in forming two adjacent layers, the radically polymerized ultraviolet curing ink is printed, after which ultraviolet light is radiated to semi-cure the radically polymerized ultraviolet curing ink to produce a semi-cured radically polymerized ultraviolet curing ink, and the radically polymerized ultraviolet curing ink is further printed on the semi-cured radically polymerized ultraviolet curing ink, after which the ultraviolet light is radiated to cure the semi-cured radically polymerized ultraviol
