1. If the Graphics panel is not currently displayed, select the desired graphic by clicking on it in the Project Browser or in the modeling window.
    The Graphics panel is automatically displayed.
  2. From the Connectivity tab, click the PolyBeam collector and select a polybeam from the modeling window, or double click PolyBeam to open the Model Tree (from which the desired polybeam can be selected).
    An outline is created using the points from the selected polybeam.
  3. Click the Properties tab and enter values for the inner and outer diameters of the tube.