Answer :

Final answer:

The statement indicates that speeds and feeds should be adjusted on mills, lathes, and drill presses while running. This practice, however, goes against modern safety standards which advocate for machines to be stopped before adjustments. Always follow the manufacturer's safety guidelines when operating machinery.

Explanation:

Always adjust speeds and feeds with the mills, lathes, and drill presses running. When using machine tools such as mills, lathes, and drill presses, it's important for operators to find the correct balance between the speed of the machine, which is how fast the cutting tool spins (RPM), and the feed, which is the rate at which the cutting tool moves through or into the material. Adjusting speeds and feeds while the machine is in motion helps ensure that you can observe and respond to the cutting process, optimizing for efficiency, surface finish, and tool life.

However, safety is paramount when operating any machinery. Current standards typically emphasize stopping machines before making adjustments to prevent accidents. Always refer to the machine manufacturer's instructions and safety guidelines when operating machinery.

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