ROKR3D 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.

fun to work on. some small pieces hard to get to fit. I would buy one again. Different style thought. Just so they were different

Bought this as a learning tool for my Grandson for Christmas and he absolutely loves it! Unlike most models, this one actually required him to engage his brain and not just mindlessly follow instructions. As a Kid who enjoys challenges, this model met his expectations well and kept him engaged for more than a week putting the pieces together. He is 13 and he is a very quick learner, so the model was intriguing and challenging. The model is well designed and I anticipate he will enjoy this for many years to come. I would highly recommend this as a Gift for any aspiring Young person.

All in all this is a very good product with some interesting twists and turns.PROS: 1) Generally all parts fit together and hole alignments are correct 2) Unit functions correctly once assembled and tweaked 3) I really liked the design and functionality of this unit 4) Great COVID-19 project for indoor entertainment.CONS: 1) There are many, many very small pieces and assembling them can be bothersome at times particularly the tiny G1 insertion pegs and orange rings 2) Instruction manual should be larger and clearer is some areas (I used videos on YouTube when I ran into trouble with the manual 3) I think 5 hours assembly time is way too optimistic especially for a first time assembly 4) Certain parts, especially some of the ramps don't fit flush and are prone to breakage if you try to force them into place. Keep some glue handy 5) As the unit becomes full of parts your dexterity will be put to test....particularly the ramps and placement of main components once they are constructed.Patience is a virtue.....

ROKR 3D Designs are unbelievably intricate, fascinating, and executed as close to perfection as I've ever experienced. A joy to assemble and play with when finished.

Worked perfectly the first time.. Just follow the instructions and be careful

Probably somewhere betwren 2.5-3 stars. Would've been 4.5, but had a piece break that is essential to the whole mechanics functioning.Bought for Christmas for my son. The instructions are clear and everything is labelled well. The assembly takes awhile, but is still fun and satisfying. The problem is that some of the assembly requires a decent amount of force on fragile wood pieces. Even being extremely careful with getting the pieces connected without brute strength we had 4 pieces snap. 3 of which I glued back together well enough for them to function, but one was a piece of a gear which could not be glued with enough strength to handle catching the other wood gears repeatedly.The company website has a form to fill out for missing or broken pieces, but then after about a week wait, they emailed and said I need to pay $5 for shipping for ONE less-than-1" gear. I understand having to pay for shipping, but it seemed a little steep and ridiculous for a piece that tiny.All in all, my son got to see it work twice before the gear snapped. Ymmv, others may have much better luck with things not breaking, but fyi that the part replacement has a fee, and in general I can't say that I'd recommend because it's gonna take a couple hours of assembly and in the end something could snap and render the whole thing useless.

This is our third Rokr model and we love them all! We have two marble runs and the movie projector. These models are only held together by friction and don't require glue, yet they are very durable once completed. My 4 year old toddler has been playing with our first marble run model for two months and it's still going strong, although we encourage him to be gentle. I would not recommend assembly for little ones. The box suggest ages of 14+ and I agree. Some pieces require a decent amount of pressure to assemble as well as an intuition of the correct amount of pressure to apply. The connecting pieces are mostly thin wood so you could break them if not careful. I only broke a single piece across all three models but I could have easily broken a few more. Luckily, the company includes a few extra pieces of the parts that are easy to break or lose. In summary, these are a great buy for people who like functional models.