Fun building

AMOR PRESENT Wooden Ferris Wheel 3D Wooden Puzzle Wooden Building Kit for Birthday Present, Thanksgiving Gift, Valentines Day Gift, New Year Gift is a fun build. I love giving this a full 5 stars! My only thoughts were it didn't come with the sandpaper; the instructions had indicated it was accompanied with the pieces, so I had to go through the garage to find a piece that wouldn't be too harsh on the wood. I do recommend sanding some of the pieces to smooth out the rough edges. I had a little hammer and used the discard-pieces to soften the blow when I tap the pieces into place. The instructions recommends popping out all the pieces; NEVER DO THAT unless you are an expert with putting together 3D puzzles. Just pop them out as you work on each step and you wouldn't have any difficulty completing these puzzles nor have to worry about losing pieces. Difficulty level ... probably a 12 year old would have no trouble. Would be fun to work with younger kids, since the Farris wheel actually turns, they'd have a sense on accomplishment and enjoy playing with it. Glue is not necessary but you can use it while assembling the wheel together it you have trouble with it. Otherwise, I recommend alternating on the joints, then put the two wheels together (you'll know what I'm referring to when you work on it). HAVE FUN!