I have a part that resembles an hourglass when viewed from both the front and the side. I would like to model this as a sheet metal part in SolidWorks 2009 but I am having some trouble. I was able to model it as a shell and have attached that part here, but I can not figure out how to do this as sheet metal. I was able to model one face as sheet metal and tried to use an extruded cut to create the hourglass shape, but that results in the error "This feature will create disjoint bodies."

Can anyone help me create this part as sheet metal so I can create a flat pattern for laser cutting?