ROKR 3D Wooden Puzzles for Adults Marble Run Model Building Kit(LGA01 Marble Night City)

11/12/22 I’ve had this sitting on my kitchen counter for about 10 months now. It’s been a conversation piece and it’s been enjoyed all that time so it’s was definitely worth the hard work and time it took to build it. My wife even enjoys it being there. Kids seem to enjoy it the most and marvel at how it works. However, one energetic kid was a bit too forceful with it and broke off the handle. For longevity, you need to tell everyone to be easy on it and not force things since gear meshing etc can momentarily bind. FYI The handle attachment is a weak link which breaks before other more complicated pieces break. It is easily fixed by gluing a patch piece of plywood over the broken area. Original review I like the way this kit turned out a lot. The pieces are of high quality and fit together nicely. It’s a lot above average in difficulty and you’ll need persistence to put it together. Also there are a few areas that need tuning that I describe in my video. But once it’s tuned it works great. To summarize, you’ll need to a) add a guard rail to stop the ball bearings from occasionally exiting the spiral. You can use the left over original plywood cut out. Just find a 5” diameter guide pieces (I used 8mm film can) and use it to cut the outside diameter of the spiral. b) put a plywood wedge with 45 angle under one drop hole (finger points to location in photo) to kick the bearings forward and keep it moving c) add the correct number of spacer rings so the bearing drop freely between the plastic pieces and d) adjust the play in the flip-flop so it alternates properly. Mine works very well and people really like it as do I.

This thing was so fun to put together. I have big meaty sausage fingers so I found it a bit difficult in some tight spots but I managed. I broke one small piece that I had to glue back on and I had to sand down a couple of places to get the marbles to move a bit more smoothly. Other than that it functions great. Its such a cool thing to have and everyone that comes over plays with it. This was well worth the price.

The kit is a work of art! Very impressive manufacturing... That said, this build will absolutely test your patience and core finger strength. Parts are very fragile and difficult to assemble. You need to apply just the right amount of pressure in just the right place -popping out the pieces and putting them together takes a lot of focus. Sometimes felt like using my whole body stength to fit these tiny wood pieces together without breaking them. Precision pressure and patience is required. Instructions have some errors. Expect frustrations. Work carefully. It's a neat build

Very good quality material. Extremely well designed and fun to assemble. After several hours it is complete. I had to tune some areas to help it run smoothly but now it cycles all steel balls flawlessly. Very fun to use and fun to look at!

This is a 5 star product for me. I did break two pieces, some of the pieces were very difficult to push together, and it doesn’t work perfectly every time. I did also use a little super glue in a few pieces. However, the design of sending a few sheets of balsa wood, to make something like this had my wife and I blown away. It’s super impressive… I thought my 5 year old and I could do this together, not for kids lol Some comments reference a few of the issues I mentioned as reasons for knocking off stars, it’s a delicate, very elaborate, balsa wood marble theme ride… it’s not made of plastic and it’s not supposed to be a quick throw together project. The fun is in the assembly. So carve out a few nights, or weeks and enjoy this marvel! Thanks for a challenging and fun build. Highly recommend.

Really disappointed with this. Spent the better part of two days building it, did everything carefully without any obvious mistakes. Nonetheless it really doesn't work at all. The marbles get stuck more or less everywhere and it is virtually impossible to use. I do not have the slightest idea what we did wrong or why this one is such a disaster when others had more success. Thankfully amazon gave me most of the money back. Would definitely not recommend this.

This is not my first Rokr puzzle, and while I did find it difficult, as long as you follow the instructions carefully (very carefully) this is a fun and mostly fulfilling project. However, I like many other reviewers on here are experiencing marbles getting stuck on the track. I wonder if others are having the issue in the same location as me. The issue for me is in piece A28, which is sub part h. The thin wood seems to warp in a way that marbles get stuck in that section, which is unfortunate. I did make errors in other places, and corrected them. But I have triple and quadruple checked, and I built that section properly, and everything is seated fully. It seems this is an error, either in materials or design - the first corner bends up in a way that prevents marbles from going the distance. Still it was a fun and challenging build. I guess it's the journey, not the destination?

This marble run puzzle is equal parts challenge and reward. The wooden pieces are precisely cut and fit together snugly, though patience is required — some sections demand careful sanding or extra pressure to snap in. Once assembled, the gears and tracks create a mesmerizing motion as marbles wind through the city design. I spent a weekend building it, and the satisfaction of seeing the first marble roll smoothly through made the effort worthwhile. It’s sturdy enough to display, yet interactive enough to keep guests entertained. Not the fastest build, but definitely one of the most rewarding

Nice to do something non-digital. And looks good on display

Relaxing but sometimes frustrating! It's sturdy enough but you have to be careful when assembly as some pieces are easily breakable. I had to use a little bit of glue here and there just for my own sake. Definitely not a puzzle for kids. Took me 8 hours to assemble

This was a Christmas present as a surprise for my husband. Unfortunately it was not a surprise as it was just the product box with the label on it. Being put in a padded bad would have been great as the box was damaged. The product itself was luckily not damaged and was great.

Cool 3D puzzle. Fun and challenging to assemble - good instructions but does require a little skill/patience. Neat to play with after finishing - doesn't just sit there and collect dust.

Extremely frustrating. The parts don’t align perfectly, don’t fit tightly and keep popping up/out during the final assembly..especially the rails, so the marbles don’t run smoothly. Don’t recommend this product.