In this paper, we propose a tool-creating support system named IDSET (Inter
active Design System using Evolutionary Techniques). Two kinds of Stages ar
e used in the proposed IDSET: Stages where fundamental shapes are generated
and Stages where they are combined. At each Stage, new shapes are generate
d by the system using evolutionary techniques, and they are shown to the us
er. The user's creativity is stimulated by this process. Since the system b
egins with creating parts instead of using parts that are prepared in advan
ce, Various novel tools can be formed. The user only has to evaluate the di
splayed tools, not to have to make them. A system to create tools that are
composed of two fundamental parts has been implemented as an example of the
proposed system. Computer experiments have been carried out, and various t
ools and artistic shapes have been created. Some shapes which human beings
could not easily envisage were included in the created shapes. This underli
nes the effectiveness of the proposed IDSET. (C) 2001 Published by Elsevier
Science Ltd.