The purpose of this paper is to demonstrate the use of digital modeling as identification instrument of a formal grammar. The identification is developed through the analysis of some furniture, in which it is used a formal grammar identification as a means to find out and generate a project language. This language construction is based on the grammar that generates forms which correspond to the same language, through the recursive application of a set of rules. Thus, the paper tries to identify a specific grammar for the furniture through its digital modeling.