Tools to aid designers achieve specific perceptions through the aesthetics of their products are needed in order to compete and stand out in the current consumer society. This research aims to develop a spatial grammar to include perceptions. This is conducted through a case study where rules from previous research are used to guide the spatial grammar development and generation of solutions. Results show that it is possible to develop a spatial grammar to design for perception rules extracted from consumers using Semantic Differential (SD) scales and advanced statistics. These elements combined can generate a tool that provides designers with many new aesthetically pleasing solutions. The Spapper module within the FreeCAD software is used for the implementation. Initial work examines only two perception rules (simplicity and tall), and shows the need for the third (curves) to obtain the expected results. Future work should focus on expanding the shapes available for generation (i.e. 3D primitives) to include spheres, ellipsoids, tori, revolved profiles and sweeps, which could increase the number of valid solutions.

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