Creating A Tube With Normal To Surface End Cutoffs: Option 3

I recieved another solution for the modeling task of creating end cut-offs in a tube that are normal to the surface.  This particular solution was submitted by Charles Culp.  Charles solution also uses surfaces, breaking down the process creating each surface separately.  The key aspect to this solution is Charles use of a Ruled Surface to create the normal surface.

Ruled Surface Technique

Here is the SolidWorks 2009 file of the tube.

Cheers,

Anna