I'm trying to get this shape as a solid and failing. I tried Rhino, Solidworks and Sketchup. The pictures below are from Sketchup. Some surfaces are triangulated to make it work.
I'm assuming there is some modeling principle that I'm unwittingly fighting against because it seems like it should be an easy shape to make. Eventually I want to replace some of the faces and fillet the whole thing.
I'm pretty new to Solidworks. How would I model this?