Question - How can you make a spring, spiral, or screw thread?
Answer -
We can use an AutoLISP routine such as spiral.1sp to make a spiral or screw thread. It will create a spiral path according to our needs. Then we can use the EXTRUDE command with a reference object, using the spiral as the path. Another way to do this is by using Mechanical Desktop (MDT) or Autosurf by using augmented lines as a path.