How does a process plan specify tooling to be used?

The correct approach for a process plan to specify tooling is by indicating tooling diameters and sizes. This method is crucial because it ensures that the correct tools are selected for a specific machining operation, which is vital for achieving desired tolerances and finishes in the final product. By detailing diameters and sizes, the process plan allows machinists to easily identify which tools will work best for the job, whether it's for cutting, drilling, or other machining operations.

Knowing the specific dimensions of tooling helps in the setup phase, minimizing errors and ensuring efficiency in production. It ensures that the tools can perform as expected within the parameters of the machine and the workpiece. Other strategies, such as listing all tools regardless of size or merely describing material types, lack the precision needed for effective tool selection and can lead to mismatched tools that either cannot fit the machinery or do not achieve the requirements for the machining process. Providing maintenance instructions, while important for tool longevity, does not relate to specifying which tools should be used for machining tasks.