This one-piece, spring-loaded tweezer leverages the elastic properties of FDM‑printed plastic and features a serpentine hinge design in the middle, eliminating the need for a separate spring—a common complication in traditional metal tweezers. The entire assembly is printed as a single part, requiring no additional assembly; after printing, simply flex it a few times to activate its elastic damping, with the material’s inherent characteristics providing the desired gripping force. We recommend using PETG for superior resilience. This tool is ideal for picking up tiny components, applying stickers by hand, or handling laboratory samples, making it an affordable yet highly practical solution.