I used the copper rolls to perform an 'experiment' with young children. I applied a patina solution to the copper and then allowed the children to 'clean' the copper by painting lemon juice on with cotton swabs. The copper reacted in just the way that I had hoped it would and it was VERY economical for the task at hand.
I found this product to be very easy to work with. The price is excellent too.
The 36 gauge copper was great for putting copper roofs on bird houses. It add years and looked great.