A while ago we were discussing patinas in a forum conversation. I decided to try the vinegar recipe on this piece of copper that I had textured previously. I then forgot about my experiment. So it must have been a couple of months before I rediscovered it. - stunning.
I was a bit irritated with myself because the whole piece was the light green / turquoisy colour before I started messing with it. I have sprayed a light coat of clear vearnish on it to preserve whats left.
I am trying to get the same colour on some copper "cabs" that I have made. My problem is that I am too impatient to wait a couple of months to get the colour I want.