Review on 🧩 ROKR Wooden Marble Puzzles: Mind-Testing Fun for Adults by Harley Franchetti

It was a bit difficult compared to others I've built. I'm sure some of you have already had some assembly/design issues. One of the main issues was the "checkbox" placeholder dropdown. The problem was the lack of gain in speed after the ball fell to the second level. There isn't enough power to activate the flags, so the balls they're holding fall down. After about 6 balls there was enough power to move the flags. It just didn't seem right for it to happen. So after much thought and ideas I used a piece of 5/8 pipe to allow the ball to build up enough speed/power to hit the flags (see image). I glued the top of the tub to the bottom of the top purlin. There were other problems, but they were minor. There were some areas in the manual that needed expansion inserts to better convey the build. But overall I'm glad I bought this one. Much more than other ball tracks.