Drawings have long been the visual thinking tools of designers in all of the professional disciplines including the arts and crafts. This paper reflects a current research interest of the authors in which students from particular discipline backgrounds (in this case industrial design) visualise their ideas in the design process. As a perceptual motor skill, practically everyone can make drawings as marks on paper, or on a computer screen or in many other media, in an informal and meaningful way. For example, Figure 1 shows sketches made by kindergarten children when asked by a design student to make a drawing of a cat. In their innocent minds they have pictured that a cat has three whiskers on each side of its face along with other common perceptions of its features.