As a kid, I spent hours opening and closing the vice on my grandfather’s workbench. It had wood jaws, a wood handle and best of all, a large wooden screw.
Ever since then, I’ve been fascinated by projects with wood threads. Deep, V-shaped threads spiral around the outside of a wood cylinder. And these threads mesh together with threads inside a hole (right photo below).
But to be honest, I’ve always been a bit intimidated about building a project that required cutting wood threads. To prevent the threaded parts from binding, the threads would have to be identical — inside and out. And that sounded complicated.
As it turns out, I was right about one thing. To get the threaded parts to fit together smoothly, the size and spacing of…
