This is a great gift for your puzzle loving friends or family members. It is a challenge to puzzle making on a different level. When it is complete, the puzzle can be used as a plexi glass cover on other puzzles.
The instructions were easy to follow. Took me less then 2 min to install the device into the case. Even though the nuts were securely in place, I added a bit of Threadlocker to prevent the nuts from working loose.