If you're looking for the perfect marble run toy, then you have it here. It took me about 4 hours to assemble. The key to this toy is the cables. They make for long runs and nifty trails. I would recommend this for people aged 14+ who are good at packing. Comparable in terms of effort with the assembly of flat furniture. It's like assembling a piece of contemporary Italian art, the curves follow the curves of the Dulles airport terminal. There are some errors in the instructions, particularly on pages 9, 10 and 12. The diagram on page 13 is the most accurate. The top left back loop has 3 straight sections instead of 4. The top left loop drops about 4 inches in the front and the rest of the way in the back. The two lower loops have 2 straight rails on each side, each with 1 rope. straight rail The top loop has 3 straight rails on each side with a cable for each straight rail. With a total of 28 cables properly assembled, each bottom loop has 8 (4 on each side) and the top loop has 12 (6 on each side). page) Allow some time to adjust the cable lengths, it's part of the "fun" if you like a complex project.
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