SoftEgg PVC + Spandex Trade Show Booth

So I used some of the scrap connectors that I cut off of the PVC pipe and a little bit of wood to make an 8-way joint for the top of the dome.

I laid it all out nice. Looking good!

But when I tried to put it up, the wood itself could not handle the stress!

So I glued it and screwed it down to a sheet of plywood.

Now, the screws have ripped loose from the wood. Wood is seeming like a terrible idea.

So I used bigger screws this time.

Put it up!

Success! It barely holds itself together!

A few days later:

So, let's get rid of the regular wood and just use the plywood instead...

Seems to be working, momentarily.

Used some string to keep the door from springing out.

Of course, we now have all new types of failure to contend with...

And later:

PVC and wood just don't seem to be cutting it for the parts that need to be at tension. Perhaps I need to make a metal joint of some kind?

So I spent some time and drew the projected dome in CAD software so I could get measurements and determine how much cloth to cover it.
The dome is ~13 feet high, and fits in a 10x10 booth area with a 6 foot wide door. Theoretically, the projector is inside, and projects the demo onto the surface of the egg for demos... or something. To be made of some sort of stretchy cloth.
Now to find suitable fire retardant stretchy cloth...

Here is the first test for the Soft Egg Dome trade show booth. The question was "will PVC bend without breaking to form the frame, and it seems like the answer is "YES!" Clearly, some sort of 8 way joint will be needed at the top of the frame.
It is a bit bigger than the 10x10 allowed. Internal bracing is required. I'm intending a stretchy cloth cover that will hopefully keep it all under tension and stable.
I need to see if it can support banners and lights.

I left it out for a couple of days to see if it was stable...

But did I quit?

A learning process, to be sure!