The design of Button concrete tile was brought about by an experiment: it examined the development of a formation system created by objects pressed into a rubber sheet. The rubber sheet’s own physical characteristics mould firm forms and fine arcs which are impossible to reproduce using any other method. When creating the form, the objective was to minimise human intervention and leave the emergence of design to the materials themselves. The shape, resembling a pulled-in button, connects to the base layer with perfect arcs. From certain perspectives it is hard to decide whether we see a stand-out or depressed pattern. This tension triggers the atmosphere and ‘voice’.