As threads—originally mere “lines”—are gathered together, they transform into “surfaces,” and through layering, eventually into “solids.” We focused on this inherent metamorphosis within fibers. String_Surface_Solid is a project that casts new light on textile offcuts generated during the weaving process. By combining these discarded fibers with naturally derived binders, we reconstruct three expressions intrinsic to fiber materials: line, surface, and solid. Breathing new life into materials collected from production sites, we created six prototypes that explore this transformation.