The highlight of the design of these power tools is slightly bulging edges of parts.
Each bulging edge implies deformation caused by the reaction of a force applied, for example, to drill a hole, tighten a screw, or saw a board.

The user of a tool unconsciously senses its performance from its form.
The client specialized in developing compact and lightweight power tools had a dilemma that consumers tended to perceive their products as lacking power by their looks.
The purpose of this project was to develop a design rule to make the client’s compact products perceived as having kinetic energy equal to or superior to that of larger competing products.
From tectonic to cartoon-like deformation, flexural deformation appears when a large force is applied; we developed a design rule of arranging a design that symbolizes flexural deformation in the direction of a force applied by a power tool.