Processes for manufacturing internal gears Among common gear-making processes, which one is used for producing internal gears in general shop practice? Choose the best single option.

Concept
Internal gears are commonly produced by gear shaping (e.g., pinion-type gear shaper cutters). Standard hobbing is suited to external gears; internal hobbing is not common in basic setups. Rack-type shaping is also used but pinion-type shaping is the textbook answer.

Eliminations
Hobbing: generally for external gears.Milling: possible for certain forms but not standard practice for accurate internal gears.

Final Answer
Shaping with a pinion (gear) cutter.