🔍 Key Concepts

• Lathe facing operation removes metal from the end of the workpiece, working from the outside toward the center. • The shape and angle of the tool’s cutting edge must match the finished surface in Fig. VI. • Look closely at the side cutting edge angle and nose position of tools A, B, C, D, E, and F relative to the workpiece end in Fig. VI.

💭 Think About

• In Fig. VI, is the cut primarily along the end face or along the outside diameter of the workpiece? Which style of operation is that? • Which tool’s cutting edge is arranged so that, when held level, its active edge would sweep across the end of the work and leave the shaped surface shown in Fig. VI? • Compare the direction the cutting edge points on each tool with the direction the carriage must move to produce the surface in Fig. VI. Which tool matches that movement?.

✅ Before You Answer

• Verify which tools are clearly designed for turning along the length of the workpiece (those are not primarily facing tools). • Check which tool has its cutting edge oriented nearly perpendicular to the workpiece axis, so it can face the end effectively. • Make sure the chosen tool’s nose shape and relief would allow it to cut all the way to the center area shown in Fig. VI without rubbing.