Threading on the Engine Lathe 301

The class Threading on the Engine Lathe explains threads and how to make them using a manual lathe. Engine lathes can create both external (OD) and internal (ID) threads classified according to either Unified or ISO metric standards. To manually machine a thread a machinist must know how to set up and use a threading tool, compound rest, and quick-change gearbox before engaging the threading feed by moving the half-nut lever to the proper line on the threading dial. Machinists should also know how to perform initial operations such as chamfering and making an undercut. In order to cut threads successfully on the lathe, an operator must understand the various lathe components and processes used for threading. After taking this class, users should be able to describe best practices for external and internal threading on an engine lathe.