ROKR 3D Puzzles for Adults, Electric Model Kits Marble Spaceport LGC01, 472pcs Marble Run Brain Teaser Wooden Puzzles Building Toy, Desk Decor Creative Birthday Gifts for Men/Women 14+

I had so much fun with this! Great to build focus and patience. Fun and for mature age. Is not easy but is fun and entertaining. Got some delicate parts but is a great fit for a show case.

Me and my 11 year old really enjoyed making this, it’s a little difficult but excellent how to videos are available on YouTube at Martin’s Assembly Haven. Awesome winter project that takes a lot longer than what the box says.It’s amazing how well built the pieces are and how strong the completed marble run is.

Decent quality. 15 year old son enjoyed putting it together (took him about 8-10 hours), but what do you do with it after it's put together. Think of it more of a puzzle than a toy.

This was my first wood puzzle kit that I have assembled. I was amazed at how precisely all the pieces assembled. The pieces were easy to remove from the boards, and for the most part easy to fit into place. I can tell you that I did not break even one piece of the puzzle during assembly. They do provide extra pieces of many smaller parts, just in case you need them. I did take the advice of other builders and work on top of a towel. Should you then drop a small piece it wouldn't bounce away. The other good advice is to sand all parts to smooth the edges. Also, use plenty of wax when instructed to do so. It seems like a small piece of wax that they give you, but it is plenty large enough to apply it liberally. The puzzle will have to sit level to work correctly. Once level, only small adjustments were made to have it working smoothly.It was a very enjoyable build. I am sure to purchase another!

Although this was difficult, it was highly rewarding. You actually make the tools required to build it. I did break two pieces. One of them I had to glue myself (glue not included) and the other had a replacement part. It took a few weekends to put it all together and I totally enjoyed it. The description they have above is in pigeon English but the manual is extremely well written. I cannot overestimate how much fun I had putting this together and playing with it after it was done. Sometimes the marbles do jump out of the runs but it's all up to the randomness of where the balls fall, which makes it more fun. I would highly recommend this for the aspiring clockmaker or aged Lego builder. Be careful getting the pieces out of the frames so you do not break them. And read and re-read the instructions. You will be well rewarded. They say that glue is included in some kits but mine did not come with it. You do not need glue at all unless you break something. It says some kits do not come with wax (needed for lubricating parts). Mine did. But it says that due to import rules you might not get some. If you don't have any, then use the wax from a tea light. I cannot overestimate how much I enjoyed this.