Which type of drawing is essential for conveying all the information needed to manufacture and assemble a design?

Working drawings are crucial because they provide detailed and precise information about a design, including dimensions, materials, and assembly instructions necessary for manufacturing. These drawings serve as the definitive guide for engineers, manufacturers, and assemblers, ensuring that the final product is built according to the designer's specifications. They include various views, such as orthographic projections, and often contain annotations and notes that clarify how each part fits together.

Conceptual sketches primarily focus on conveying ideas and are not intended for detailed manufacturing processes. They are more about illustration than precision and can lack the necessary detail for production. Draft illustrations, while useful for communication, typically do not provide the comprehensive detail that working drawings encompass. Visual prototypes allow for physical interaction with the design but do not offer the technical details required for fabrication and assembly, which is where working drawings excel.