Manufacturing method of design member and three-dimensional transferring tool

A manufacturing method of a design member for transferring a decorative layer, onto a design surface of a base body, the base body having the design surface that is a three-dimensional shape and a general surface that is a surface other than the design surface, and the manufacturing method including:

• with using the base body comprising, in the general surface, a recessed parting groove that is formed in the base body in at least a part of a border between the general surface and the design surface,
• a preparing step for arranging the base body in a chamber having a gas pressure adjusting device, placing, on the design surface of the base body, a transfer film in which a transfer layer including an adhesion layer and the decorative layer is laminated on a film base material, and changing a gas pressure in the chamber by the gas pressure adjusting device to crimp the transfer film onto the design surface;
• and
• a heat transferring step for, with crimping the transfer film onto the design surface by the gas pressure adjusting device, pressing the transfer film against the design surface up to at least a part of the recessed parting groove under a heated state by a three-dimensional transferring tool comprising an elastic body.