Two towns over there is a metal stamping business which lets us route through their dumpster. I have not had to pay for any steel yet, we even find stuff that bent, channel, even louvered so unfortunately i cannot answer your questions. However, there are plenty of people here that can, and probably will, answer your questions. Maybe you can cut a section out,check the yellow pages and find a source that you can bring it to and they might be able to tell you what you need.If you get lucky,they will have a dumpster also

................Dale