A great metal puzzle by Yoshigahara. Start by taking the puzzle pieces apart, then figure out how to put them back together and restore the puzzle to its original state. Can you take it apart? Now try and put it back together!
"I came up with the idea for this puzzle when I was 19 years old. It just came to me during a stroll home in the snow, truly a creation of my youth. Unfortunately, saying anything here about its construction would give away how to solve it. I certainly can’t disappoint the fans that have come to expect frustratingly difficult puzzle from me. Besides, the fans that refuse to accept any link of hint are those who make me the happiest!"
The key word is “needle”.