Cutting off on a lathe should be performed

Cutting off on a lathe should be performed

• A. In a chuck
• B. Between centers
• C. On a faceplate
• D. On a mandrel

Answer: (A)

Cutting off a part on a lathe relies on secure axial support and a firm grip on the workpiece so the tool can approach from the end without the part slipping or being thrown by the cutting forces. Clamping the stock in a chuck provides that secure grip near the end, keeps the part centered, and allows the parting tool to reach in cleanly for a clean break. Other methods leave the end less secure or introduce awkward setups: between centers might still allow movement or misalignment at the cut; a faceplate is typically used for irregular shapes and isn’t the most stable option for a precise end cut; and a mandrel offers less reliable support for a clean cut and can risk damage to the setup.

Cutting off a part on a lathe relies on secure axial support and a firm grip on the workpiece so the tool can approach from the end without the part slipping or being thrown by the cutting forces. Clamping the stock in a chuck provides that secure grip near the end, keeps the part centered, and allows the parting tool to reach in cleanly for a clean break. Other methods leave the end less secure or introduce awkward setups: between centers might still allow movement or misalignment at the cut; a faceplate is typically used for irregular shapes and isn’t the most stable option for a precise end cut; and a mandrel offers less reliable support for a clean cut and can risk damage to the setup.