Well, a mini one at least (I call it my mini mock up)
I work at an industrial paint plant, so we have 6x12in. sheets of thin aluminum sheet. I cut a bunch up into little strips of the correct length, punched holes in the ends (which was a pain, can't imagine what it'd be like for the real thing), then put it together when I got home.
As I was building it, I honestly thought I had dome something wrong. It just WASN'T working. But eventually I got it to work. As you can see, I clearly didn't cut out enough pieces, so it's unfinished as of now. I just thought it looked.... FREAKING AWESOME.
On a side note, I tried to build a dome in Solidworks.... yeah the pieces don't fit together perfectly, so solidworks doesn't like it.
Ok, here are the pics. It looks the same from all angles so... not too many pics.
EDIT: Why on earth does it look like it's not circular in the pictures? Pictures don't do it justice.