Crafting flawless threads on a lathe requires skill, precision, and the right tools. This process begins with securing the workpiece, followed by expertly positioning the thread drill for accurate ...

That’s exactly what happened when [John] needed to cut internal splines and keyways using his lathe. Lathes are usually used to turn metal, but internal keyways and splines are operations often ...

This article was originally published with the title “How to cut Threads Without a Screw-Cutting Lathe or Thread-Chasing Tool” in Scientific American Magazine Vol. 102 No. 16 (April 1910), p ...