Define the Ellipsoidal Head Geometry

1. Select the Extras tab
2. Click the Heads button. The Negative Side tab of the Heads on Cylinder dialog box displays.
   1. Select Ellipsoidal in the Type of head drop-down list.
   2. Select Ellipsoidal ratio in the Input type for ellipsoidal head uses drop-down list.

   The default Orientation of head is Convex, and the default Ellipse Ratio (ER) is 2. Keep these parameters.

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