Never reach over the rotating part on the lathe due to the danger of protruding what?

• A. Chuck Jaws
• B. Spindle
• C. Chuck Key
• D. Tailstock

Answer: (A)

The main idea here is the risk of entanglement with rotating parts on a lathe. The chuck jaws are the parts that grip the workpiece and they extend outward from the chuck, rotating with the spindle. If you reach over the rotating chuck, those jaws can catch clothing, hair, or even a sleeve and pull you into the spinning mechanism, which can cause severe injury. That’s why protruding chuck jaws are the danger described.

The spindle and tailstock aren’t the outward gripping pieces, and while a chuck key can be hazardous if left in or dropped, it isn’t the protruding element that creates this particular entanglement risk.