1. Select the object you want to close.
2. Click Reshape in the main tool palette.
3. Click Close Ends in the lower tool palette.
4. Set the Close Ends Options parameters.
5. Click OK to close or Cancel to abort.

Sharp Edge - Sets the angle between the end cap and object at 90Á. For B-Splines and NURBs this option also doubles-up the vertices at the corner to sharpen it.
Smooth Edge - Sets the angle between the end cap and object at 45Á. Also takes into account the Radius parameter when factoring edge smoothness.
Radius - Sets the distance between the rounding vertices. The distance is equal to Radius multiplied by the distance to the end cap's center. Vertices closest to the end cap are moved in by this amount, all other rounding vertices are moved back by this amount.