Eureka Brain Teaser - Cast Jigsaw Puzzle - Cast Quartet difficulty 6 - (Cod. 473764)

Take the puzzle apart and put it back together, that is the objective of this difficult metal puzzle. A word from the designer:" True bonds has always been hard to form, but once formed such bonds are eternal and hard to break. My original version was created with this image in mind, but the puzzle was completed into a cast puzzle with a bond that is truly difficult to unravel. How would you go about breaking and forming this bond? There are two approaches to this puzzle and I challenge you to both! The key word is "Bond." Uyematsu 2007