Removing Redundant Geometry Faces

Delete the redundant faces in the geometry to create a horn.

1. In the model tree, select Union1.
2. In the details tree, under Faces, go through the list of faces. For each face, click on to hide the face until only the two redundant faces remain.

   
   

   

   
   Figure 1. For illustration, a side face is hidden to show the two redundant faces highlighted in yellow with a blue outline.

3. Select the two faces that remain.
4. From the right-click context menu, click Delete.
   Note: Deleting one of a regions's enclosing faces, removes the PEC region.
5. Select any of the remaining faces and from the right-click context menu, click Visibility > Show All in Model.

Figure 2. The redundant faces were deleted.