Jam Handy! Provides a detailed overview of the process of cutting screw threads on a lathe. It explains the different types of screw threads, the importance of precision in machining, and outlines the ...

The king of machine tools is the lathe, and if the king has a heart, it’s probably the leadscrew. That’s the bit that allows threading operations, arguably the most important job a lathe can tackle.

Before the late 18th century, machine parts were made by hand, and no two were alike. For instance, a bolt was manufactured on a treadle-powered lathe by a workman holding a cutting instrument and ...