Turning a design draft into a sample involves several steps in the engineering process. The first step is to create a detailed design draft that outlines the specifications and requirements of the product. Once the design draft is finalized, engineers will begin the prototyping phase, where a physical sample is created based on the design. This prototype is then tested and refined to ensure it meets all necessary criteria. Finally, once the sample is approved, it can move into production for manufacturing. Throughout this process, constant communication and collaboration between designers and engineers is essential to ensure the final product meets all requirements and specifications.