What is the purpose of a feed change lever on a lathe?

The feed change lever on a lathe is used to adjust the rate at which the cutting tool moves along the workpiece during machining operations. By changing the feed rate, the operator can optimize the cutting action for different materials and desired surface finishes. This lever allows for greater control over machining processes, enhancing efficiency and precision in producing parts. Additionally, it helps prevent tool wear and damage by ensuring appropriate cutting speeds.