Mechanical 3D Wooden Puzzle Model Kit Adult Craft Set Educational Toy Building Engineering Set Christmas/Birthday/Thanksgiving Day Gift for Adults Boys Kids Age 14+(LG501-Waterwheel Coaster)

We had a very nice 5.5 hrs with my partner building it. Instructions are well organized and very clear. A lot of spare parts left at the end, though there were a lot of fragile parts, better to be careful not to break any by mistake.

Entregou o prometido.

So fun to put together. Not for children.

I’ve been pleased with the ROKR products we have built, and this is no exception. The craftsmanship is excellent, and they have plenty of extra pieces for things that might break or get lost. My 12-year-old son is very pleased with his marble run. It occupied him for hours on Christmas Day, and he was exposed to engineering and construction principals, like cogs, converting circular motion to linear, and how to use slope and gravity. Our ROKR products get used from time to time throughout the year.

Built it with my 8yo. Everything about this toy is incredible, he had fun at each step of the way checking what individual parts do. And a few days after putting it all together, he still runs to it in the mornings for a few extra turns. A few observations : 1- it is easy to separate the pieces from the wooden panels, but you have to be careful 2- we also used a nail file, wooden glue, tweezers (pressure and cut), screwdriver (used only as a light hammer), and a pin. 2a- The pin was cut when some delicate pieces needed repairing: would put glue with a tiny metal piece in the middle to be sure the structure would hold. 3- there is a lot of extra pieces, but we only broke those without spare, so be extra careful with pieces that have thinner parts. 4- it is great that the identification of the pieces are on the piece themselves, making it easier to find what you need. 5- my 8yo needed help because he didn’t have enough strength at times, and rarely needed a few tips. It was a team effort and very entertaining. We already have another set by the same company, and probably will buy more in the future. Can’t recommend it enough!

I bought this marble parkour for my daughter's 9 year birthday. It is amazing! First of all, I have to say it's not easy to assemble because all pieces are designed to snap to each other super tight. I did all the snapping work, and my nails were quite stressed. It is a good idea to utilize two tools included in the package. I don't think my daughter is strong enough to snap them. Though you may think this is a drawback of the toy, I believe it's absolutely necessary to make the whole structure sturdy. I also love the way they snap together with mortises and tenons. Very smart and elegant. I had my daughter to take off pieces from boards and figure out how to piece them together. It was so fun to piece this complicated, delicate, and very well designed 3D puzzle together. We got the fun of being a carpenter when we put each module together and then wow at how smart the module works (like a programmer wow at nice codes). When the whole toy was put together, we were surprised to find out that the parkour runs the marbles endlessly. I had thought we had to pick up the marbles from the bottom and put them to the top of the parkour each time. It's not the case. The whole parkour is a continuous cycle, wow! My whole family love it. My 6 year old son was so excited that he turned the handle non-stop for an hour, lol I'm going to buy a different puzzle of the series next year. Thumb up!