ROKR Mechanical Gears DIY Building Kit Mechanical Model Construction Kit with Balls for Teens and Adults Tower Coaster

Very detailed work, the quality is great and the the build is fun

Love doing regular puzzles, but decided to try something 3D this time. It was great fun! The material quality was top notch, the engineering was incredible, and the instructions were some of the best I've seen. If there's any ambiguity, I always put things together wrong way first before getting it right. I had no do overs with this. After a little fine tuning, it worked perfectly! A lot of the connections require a great bit of force. Using the provided sandpaper to knock down the edges on the male connectors is advisable to get a good start before the major pressure begins. Good luck!

This is not simple build, it takes some time and effort to put it together which makes the whole process much more fun. The end result is a very cool marble run that my everyone likes to play with. The wood pieces are thin but strong enough for this build. There are a few pieces that needed to be lightly sanded but all considering the overall quality of the kit is quite good. I like this one so much I bought another version that Amazon has available.

This was my first ROKR puzzle I tried and didn’t know what to expect. Well I was blown away at the excellent, detailed instructions and the precision of each wood piece in the box. I wasn’t sure I was going to be able to accomplish the assembly, but took my time…….fixed a few of my minor mistakes along the way 😬, and everything went together nicely. It even worked the first time I tried it! I have since purchased other ROKR models and have been just as pleased with them.

Great but it does need some glue on the track going down the steel marble hitting the sides is going to work loose. Otherwise it is a lot of fun, challenging and exciting. I have already ordered some more.

This has been a really fun project for me to work on. I'm glad I got it. It's not too easy to build but is easy to follow which is what I wanted. There needs to be some challenge to it. The company also has a FANTASTIC CUSTOMER SERVICE. I had a weird issue with one piece that to me looked like it couldn't have been foreseen by them but after a couple messages back and forth they sent me a replacement piece super fast so I can continue with the project. I would highly recommend this brand/product.