Making small screws on a manual lathe sucks! And a good guy on a Cnc machine can write a program faster than I can type this.

I have been machining for over twenty years. And I run/ program in my head. We just don't have a Cnc lathe at my work. Only a very large mill(60" travel x axis)

I will try brownells again. I look at them a while ago on another custom build and wasn't impressed.