One thing I have to tell you about----if you look at the center vertical bar, it is a bit crooked----here's why. When you first weld it in, its as straight as an arrow. Each time you weld in an additional rod, the metal shrinks microscopically at the weld as the weld at each end of the rod cools. By the time you have welded all the other rods in, this shrinkage factor gets multiplied by the total number of rods. The total shrinkage becomes so great that it causes the center rod to buckle. How do I fix that?---well, after all the welding is done, I take my small cut-off wheel and cut the center bar off close to the top where it attaches to the perimeter frame. As soon as a peice the width of my 1/16" cut-off saw wheel is removed, the rod straightens out, then I reweld it.