Remember this? Figure 2b: Look at the thread dial, it should be turning around slowly if not you got issues. Rhuan Santana. The feed rate in thread turning is 10 times greater. In addition, there have been design improvements in thread turning inserts resulting in better chip control.
The procedure for making an actual cut is: Flag for inappropriate content. Checking with a mating quality nut or thread gage is the easiest method to determine when the thread is cut deep enough. Figure 1a: The quality of the thread formed is usually higher, the insert design allows chips to flow out of the bore with little damage to the thread, and the ability to index the tooling results in a lower cost for tooling.
You should have the cross slide and compound slide dials both set at ZERO and the bit is barley touching the work now. In general there are two types of cutting tool geometries which can be used: Crank up your lathe and engage your half nut on a number.
CTE About the Author: The handle should be engaged as the red arrow demonstrates. Move your carriage back to the start.
I will tell you a faster RPM makes for nicer looking threads but it is more difficult to catch the number and stop the process in time, so for now go slow. Each successive pass engages a larger portion of the cutting edge of the insert. This document presents some of the more common techniques for threading on the manual engine lathe.