I'm extremely busy with work and having just bought a home. I'm extremely hopeful I didn't erase the original cad files. The "proper" gate would of had double the number of rays  a slightly different sun size and no supporting square frame.  I had to simplify the design due to the time constraint and budget.

The material would of been varnished turned copper for the sun, and grain matched 304 stainless for the rays, then the opposite sun would be visa versa with stainless for the sun and copper for the rays.
The backing would of been a very small I beam with small channel sections coming off to support the rays.

The original gate is absolutely beautiful but I estimated would of taken a good 10+ hours at the sprinting pace to attempt to finish it. I'm crossing my fingers I can find those sketches so that I can remake the gate.

Actually I was able to track down the original sketches much faster than I thought, Attached are the design sketches I made, I'm still missing the blue prints I made in inventor.
you can see the progression from complexity to simplicity, the final design on the right hand side also has a square frame as making a "free floating" design like the other 3 would of taken too long and too much material.