ROKR 3D Assembly Wooden Puzzle Brain Teaser Game Mechanical Gears Set Model Kit Marble Run Set Unique Craft Kits Christmas/Birthday/Valentine's Gift for Adults & Kids Age 14+(LG503-Lift Coaster)

I have bought 5 of these for gifts. For people who are mechanically inclined and like to tinker and build things. Every single one has been a smashing success! Every recipient has loved the assembly and now has a cherished product to share and tinker with. I received reports that there were extras of a few pieces that might have been prone to breakage, but none of the extras were needed because none of the first attempt pieces broke. There is also enough uncut wood to cut your own custom pieces if needed. Perfect working order after assembly on every single style of this brand. I will not trust another brand but this one I can trust completely. And so can you. Great designs, great gifts. Go for it. Please Click the helpful button if this review was helpful to you.

Adult assistance needed. Nice project for teens who like model building.

My hubby loves it. He was once in charge of huge construction projects. He often gets bored in retirement. I got this for our anniversary. I may get another one for his birthday.

I've been building models for a few years now. This is the first wood model I've done and the first one with moving parts. I enjoyed it overall. It took a few nights to complete. The directions were fairly clear and all the pieces clearly marked. As others have said, you have to be careful with the pieces because they can be a bit fragile. I broke a couple and had to use wood glue to fix them. If two pieces aren't fitting together, it's better to sand them down until they fit. I also had to make some adjustments here and there so that I could crank the mechanism without it getting jammed. There's a fair amount of engineering involved. The most challenging part was working with the round orange pieces. Once they are on the metal rods, they're really hard to take off.

It was a gift for a bright young man (15 yrs). and he loved it!

I bought this for my 11 year-old grandson and he loved it! It kept him busy for 3 days!!

This was a gift. One part broke upon frsrt use after being assembled. I am disappointed and expected better quality.

Great little puzzle/machine thing! This was a surprise for my husband cause he was bored at home all the time. It took a week to convince him to put it together, but once he started, he didn’t stop. It took him a few hours, maybe four or five at a leisurely pace. It was not very difficult, just need to pay close attention. The instructions were very clear, even had videos to watch, but he didn’t need them. A couple of the really tiny pieces broke trying to get them out of the board, but there were extra. Had to glue a couple pieces to keep them in the right spot. Worked very well after putting together, minor adjustments to stop the balls from jamming or falling out, but no major issues. Will buy another!

I just love these puzzles. I now have 3 of them and they are easy to build and fun and relaxing to play with.

Same as the first ROKR puzzle I did, packaged well and all the pieces were easy to pop out and assemble. Once concern with the way one piece is built with 3 little wood screws that go into opposite sides staying put, but once the built piece was snapped to the main board, it worked flawlessly. The arm that works the elevator is pretty cool to watch -- I've had 2 of these this Christmas and will consider getting a 3rd in another month or so -- great fun to assemble and end product is a neat showpiece! Highly Recommended!!!

Just finished the marble run, works just fine, enjoyed the challenge. I would suggest using a lite silicone grease as I think it works better then the wax. I build RC cars and trucks (have 27 of them) most kits come with some of it I used it sparingly it helps everything work better. Now onto the airship, got two at the same time would recommend to any one who enjoys a challenge will defanatly be buying more of them. Thanks

very challenging to build for a 13 year old, but great

This is my second marble run. This one was a challenge. While I am patient I was able to build the entire model without any broken pieces there were a few that just didn't fit properly. A few parts of the crank portion had to be repeatedly put together and taken apart due to things not quite lining up correctly. In the end it all went together but the functionality is not up to par. The initial lift does not clear the lift to the marble stays on the lift instead of starting down the track. (Some serious sanding was required). At the drop point on the rolling drop rails, often the marble just falls and does not continue down the track. Adding my own ramp piece for the marbles to land on and get some momentum fixed this issue. I also found that the second ramp coming off the main lift was about 1 cm too long and did not fit properly. After doing a little McGyvering I was able to get the ramp to fit but it is very likely because of this, the ramp is not angled like it should and again the marbles do not run the track. Overall I enjoy building these wooden puzzles but I think this one needs a bit of reworking. As for the unit itself it looks neat but functionally it is not that good. Decide for yourself if it is worth it.