I posted several questions regarding welding copper over the last year or so. Here is one of the projects where I put some of that knowledge to use. (Thanks Ernie and others!)
I welded the copper using my Thermal Arc 185. The 185 isn't really enough to weld 1/4" copper and I had to preheat the copper some with a torch to even get a puddle flowing with the tig welder.
The grill at the bottom is at Chihuahua height so our three can look out as we come up the stairs.
Also, the retaining strips for the center panels are redwood, but I have 1/4" square copper strips on order.
-Aaron
I have an all-copper gate that is still in the works. I purchased arc welding rod for copper from McMaster-Carr and will see how that works on the 1/2" x 1" copper frame. I'm glad I bought that copper two years ago...