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This tutorial is prepared for beginners in CATIA, please follow the steps as shown below to model a spring coil with tapered angle.
1) Open CATIA by double clicking the Icon which would be in your desktop if you are using Windows and believe it to be
the same for UNIX also. The screen would be as in Figure 1.
Figure 1.
2) Click File menu from top of your screen and click new file option from the menu list as shown in Figure 2.
Figure 2.
3) Then a small dialogue box appears as shown in Figure 3. Select part from the list and
click OK. Then a default part with name part1 is opened.
Figure 3.
4) Select Generative Shape Design from menu as shown in Figure 4.
Figure 4.
5) Then select Helix tool from the toolbar as shown in Figure 5.