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.

While this is definitely not for kids, I really enjoyed putting it together. The pieces are very accurately cut and well-marked. You have to be careful not to break them, some a pretty fragile. Once you get acquainted with how things go together it isn't a problem. I broke a couple of pieces, but they were easily repaired with some wood glue. The instructions are all pictures and some were a little small, but I took a pic with my phone and zoomed in to figure those out. There are also some videos that help (QR codes in the manual direct you to the videos.) There were a couple of times that i tried to make something work before completing the assembly and was worried that things didn't align properly, but later steps in the assembly fixed every issue. If you are impatient, or have trouble following instructions closely, this isn't for you, but I loved it. I ordered my second one just a few days after completing the first one. Highly recommended.

Lists as HARD. I didn't find it hard to do but the assembly took more time because of the time it took to glue pieces that broke. This is a very delicate project. Pieces are narrow and break easily even when you are being delicate and using tools they give you. I haven't quite finished it yet so I don't know how durable it will be. Still I like building and fixing; I just wanted to give a heads-up. Other than that, instructions are good and all parts (with some extras included) were enclosed.

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.

I’m not a puzzle guy, but my wife’s family loves flat puzzles.i bought them all ROKR puzzles suited to their likes last Christmas. I don’t believe they ever ended up building them, but I figured I would buy one for myself this year because I was intrigued. I had so much fun building this thing. I was so locked in. Once I finished it, it didn’t work the way it was supposed to, but that was my fault on a few different steps. I’m going to buy these these puzzles one after another. I have found a new hobby thanks to this puzzle. 100 percent recommend purchasing this. The instructions and build kit are perfect. Can’t express enough how much fun it was to find a new hobby like this. Thank you ROKR. Also if you want to send me any for free that would be awesome haha regardless I’m going to continue to keep buying them!

The engineering is great, but the plywood parts can warp badly and square pegs sometimes get crushed and require gluing with crazy glue. I did get it to work after much jury rigging and fixing the gates and ramps to prevent traffic jams or marbles escaping. Follow the instructions VERY carefully as undoing mistakes causes significant damage. Mistakes such as switching right to left or back to front are easily made, and if not corrected the machine will not likely work at all. Because it DID work, and is very cool when made, i would recommend this, as well as its companion, spaceport. Same comments apply to that one as well. Fun index is high if you like solving problems. These do work.

We were amazed at how well this kit is designed. I am 69, my husband is 76. We put it together over about 6 days working a couple hours at a time, finishing a few steps at a time. Follow the directions, each step, do not jump ahead and it all comes together in the end. We are amazed at the design work that it entails, each little piece, each slot, each peg. There were some tight spots but were able to handle it. A great project!!

I had so much fun assembling this item, but am slightly disappointed that it does not work well for me when put together. As a careful 30-year-old male who greatly enjoys tasks like this and exploring mechanics, it was unfortunate it wouldn't work properly after completion. I spent several hours with precision on this project. Sure - could be user error, however there are multiple other comments that would point out specific pieces that either wouldn't connect, or the curved pieces that are too narrow and don't allow the marbles to free-flow through the track. Some wood pieces fit in their respective notch like a glove, while others didn't have enough 'meat' to secure together with its counterpart. I do recommend having wood glue handy if necessary, maybe some clips/clasps to help things set in place. They do have a spare parts board, thankfully I didn't need to use any. The instructions were pretty clear, there are a few parts which could use some clarity, though; so pay attention to detail. I do recommend gently sanding your pieces to keeps connections smooth as possible, no splinters, neat appearance. In conclusion, last night I have purchased more 3D puzzles, trying out different companies and metal vs. wood and how the precision of the cuts could make a difference. I had tons of fun assembling this but would've loved for it to been functional as well.