Tutorial - Modeling a spring in AutoCAD using slice tool?

Here is the tutorial.
Step 1:
Start AutoCAD and input Torus command.
Step 2:
Center at 0,0, Radius of torus = 25, and tube is 2.5.
Step 3:
Now we have the torus generated.
Step 4:
Slice command and select the torus.
Step 5:
Enter ZX plane.
Step 6:
Enter point 0,0,0.
Step 7:
B for both sides.
Step 8:
Now enter rotate3d command & select the half of the torus.
Step 9:
Select Y-axis.
Step 10:
Ctrl+right click and then select center.
Step 11:
Select the center of the torus.
Step 12:
Enter 5º angle.
Step 13:
Repeat same step for other half but the angle is -5º.
Step 14:
Copy command and select both objects.
Step 15:
Multiple type.
Step 16:
Select the lower point as the base point and the upper point as targer point. Keep repeating it till you get desired spring.
Step 17:
We have the spring.