Processes on manufacturing drawings specify the required methods or operations to produce, modify, or finish a part. These can include machining (milling, turning), welding, casting, forging, heat treatment, surface finishing, or assembly techniques. Detailing these processes ensures that the part is manufactured according to the intended design, function, and material properties. For example, a note might indicate that a part should be heat-treated to a specific hardness or welded using a particular technique to ensure structural integrity. By defining processes on the drawing, manufacturers can maintain consistency, quality, and efficiency throughout production while minimizing errors or deviations from the design intent.