🔍 Key Concepts

• Lathe safety and work-holding when using special tools like knurling tools • Effect of lathe speed on tool performance and surface finish during knurling • Role of lubrication (cutting oil) in reducing heat and wear on both the tool and the workpiece

💭 Think About

• Think about what happens if the knurling tool chatters, slips, or moves while in contact with the rotating workpiece—what setup condition prevents that? • Consider how speed and oil each affect friction and heat when the knurling wheels press hard into the work surface. • Ask yourself: when performing knurling correctly, which of these practices (speed choice, lubrication, tool mounting) are considered standard good practice, and which are optional or less critical?

✅ Before You Answer

• Verify which actions directly improve safety and tool rigidity during knurling. • Check which practices help control heat, friction, and surface finish of the knurled pattern. • Before choosing, ask: are all the listed practices generally recommended together when knurling, or is one clearly more essential than the others?