I’ve never painted on copper, but I’ve wanted to for a long time. Copper is, historically, one of the most stable supports to paint on with oil. I recently purchased some small 5 × 7” sheets of copper from the hardware store. I mounted this one on hardboard with Gorilla Glue. I then cleaned it with denatured alcohol and scuffed it with sandpaper. While painters back in the day primed with lead white, I’m going to paint directly on the surface of the copper and leave some of it showing. The panel looks beautiful and I really want to see how it takes the paint. I’ll let you know how it turns out.