the ball track is a very extensive and not easy-set-up construct. However, it is solvable with a little perseverance and patience. Piece by piece, the tension grows and the first experiments with the balls already producing the first fun. A few fiddly small parts should, however, be built a little more stable, 2 to 3 parts were already broken. But as you get used to fast on the tinkering, it is also prepared here and inventive, to remedy this situation by means of a tool box. Total: managed
