SISTERS GRIMM stamping die

Ever wonder how foil gets stamped on covers? I know you do. I just got in some old worn out busted dies from the printer today for the Sisters Grimm series. These dies are used to slam the foil under extreme pressure onto the case of the book. All these dies are made from copper and weigh at least 15 pounds when stack all together. I very rarely get to see these dies. Boss!