<![CDATA[The furniture industry generates residual materials that remain underutilized despite their potential for value creation. This study identifies sustainable design strategies through the development of the Astera Coffee Table. A research through design (RtD) approach was applied using the DT-DI framework comprising Empathy, Define-Ascertain, Ideation, Prototype, and Test-Evaluation. Data were obtained through field observation, semi-structured interviews, design documentation, and questionnaires. Reflective analysis connected material conditions, design decisions, prototype development, and their consequences. The study identified five strategies: residual material revalorization, design adaptation to material characteristics, aesthetic value enhancement, user-based validation, and efficient lower-impact production. The final evaluation involved 54 respondents and indicated perceived sustainability application at 91%, functionality at 89%, aesthetics at 86%, ergonomics at 88%, with an overall aggregate score of 89%.. The findings provide a case-based framework for transforming furniture-industry residual materials and establish a foundation for more comprehensive environmental and life-cycle evaluation.Published Date: 2026-09-26]]>
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