ROKR Marbe Run 3D Wooden Model Kits Mechanical Model Construction Kits With Balls For Adult and Teen (Cog coaster)

Far too advanced for 12 yr old without adult help. Even adult who is very technically minded was challenged especially for time. Fiddly

Excellent product and x makes for an exciting build

I had looked at this before and thought "aint got time for this", but I eventually purchased it anyway, and what can I say? Firstly spend at least an hour looking at all the parts and instructions in the well presented box thinking where to start. Once you do eventually start make sure to sand all the little bits off the edges as you pop them out as the end result does look so much neater. The parts do come apart easily if you think you have made a mistake but they do break easily too, but no worries as there is spare ones provided but not many. A couple of points to note. On the 3rd picture is the rear of the model this section in the booklet is quite vague and says to use 4 plastic bushes, this is too many so use 3 and fit like I've done here. You may find this makes more sense when building it. Also photo 2 is the most complicated bit on this model and as you can see it snapped as I put the leg bits in the wrong way, but a decent wood glue sorts this out, looks nasty but works, I might paint this bit black with a permanent marker pen. Also the little label with the brass screws I would advise putting this bit on before anything else as it's quite a challenge once it's complete and add the legs too as when your building it gets on your nerves not staying put, should be noted this does exert a little extra pressure to the board so go easy. Overall its a lovely little pass time, I would say its taken a little over 7 hrs to build and about an extra hour fine tuning, just to prevent the balls getting stuck on certain bits where the track hasn't been connected correctly. I love this product and will certainly be buying more. Now to see if I can hook up a small motor to turn that big wheel.

The media could not be loaded.  Instructions were pretty clear - you need to check carefully though. A few spare pegs ( it would have been useful to know this rather than worry when one broke). Gave 10-12 hours of quality creative time for a nearly 12 year old and his mum.Would buy again without hesitation.

This was a challenging build for us and our 11 year old grandson but the satisfaction and fun was to quote him “worth a little pain!”The instructions and little video clips are excellent but you have to concentrate!

Good value . Would like to have found a lot cheaper Thanks all the same

Excellent. Took our youn man a while to make and was sturdy

It was a decent model but my Stroke didn’t enable me to do it, I broke a few bits, repaired them but it wasn’t to be! Amazon decided to refund me, they are wonderful!!!