On Sunday, November 24, 2013 2:24:17 PM UTC-6, cbodnar wrote:
I'm looking to make something similar to this: http://www.uncommongoods.com/product...FepQOgodqikAEQ

I would start a search with:
A roofing specialist/company should have sheets of copper flashing readily available, to them. They might even have facilities to cut-to-size whatever width & length you need, if tin snips & a file aren't sufficient for DIYing. I've often fabricated "whatever" improvised item, from leftover copper flashing sheets from my home's roofing. I've even found improvised uses for the leftover copper nails, from the flashing and roof tile installation. A good roofing company should have access to these sorts of supplies.

A "complete service" roofing company may know where other types of sheet metal goods are available, also, for not-so-typical of applications/needs.

Sonny