This project focused on designing a fully constructable chair using only cardboard, exploring how material limitations can drive creative structure. The goal was to create something strong, stable, and easy to assemble without relying on additional hardware or fasteners. Through iterative prototyping, I tested different folding strategies, interlocking joints, and load paths to maximize strength while keeping the design efficient and lightweight. The final result highlights how simple materials can be pushed through thoughtful design and structure.