Today. I took some copper and brass to the scrap metal dealer and I am sure my copper weighed as much as my cat. (he weighs 16 pounds) The scale indicated 10 pounds. "C'mon that's a rip-off!" Anyway he wrote down 12 pounds and the brass 20 pounds, probably should a been more like 30 pounds but copper is $2.75/lb and brass only.60/lb so alright. Scrap dealers always rip you off.