UGEARSSTEM Random Generator Model Kit - Creative 3D Wooden Puzzles for Adults, Teens and Children - DIY Mechanical Science Kit for Self Assembly - Educational and Engineering 3D Puzzles with App

good teaching aide

My ten year old daughter and I had a great deal of fun building this. The instructions are very clear but must be followed precisely or you'll run into problems. I do question the 8+ age recommendation though as my daughter, who is a whiz with all things mechanical, had to ask for help at certain points and some of the parts took adult strength to fit. She now has her sights set on some of the more advanced models. Fantastic teaching tool for kids and adults alike and we can't wait to build more.

Instructions are a help but one has to use logic and pass experience with these kits to get it done

I am so disappointed with this kit. I have done 12 different models and and companies and this kit gives the company a bad rep. I love Ugears.EVERYTHING I MEAN EVERYTHING needs to be sanded to fit. And still had to glue pieces that were just cut wrong. Do not force ANYTHING but then if you sand to fit there is no “friction” to keep it together. This is my thirteenth one. Last one of this STEM series I will do. If you buy this you need to be meticulous, have crazy glue, sandpaper (not included) and a very boring day. Good Luck!P. S. Ugears has really good kits. I just had a horrific time with this one.

This Is a mechanical 3d puzzle easy assembly, great for learning purposes

this was a fun one to assemble and it works really good. Make sure to sand all the burrs and wax all the gears really well and you should have no problems. Great project for a young mind.

Child liked and felt challenged when building.

This is a relatively simple build.Great for teaching grandkids about randomness

Et c’est bien amusant à bâtir

The kit consists of four wooden panels pre-cut by laser with press-out pieces. In addition there are rubber bands and wax to lubricate moving parts, and an easy to follow instruction book. The completed machine can count by operating a 'plunger' or by turning a wheel, and can be reset to zero (or to any number) by opening the front, which disengages the number wheels from their gears, enabling them to be turned independently. I don't know how long it will last, but it seems quite sturdy and even has rubber feet under it (made from a rubber band). Only negatives is some parts can be quite hard to press out (there is a tool provided), and it takes quite a bit of pressure to press some of the parts together. Also, eventually the rubber bands (that act like springs) will eventually decay and break, I expect. (It would probably be possible to repair it if this did happen). But worth 5 stars as an entertaining puzzle as well as educational.

I got this for my 9 year old niece for her birthday. I’ll say i was really impressed by the quality of the pieces and the instructions. She also really liked it.My only issue with it was that it was too hard for my niece to assemble it. It needed too much force to push the pieces in their places. I, a 30+ year old, had to push/squeeze hard to get the pieces in. I did enjoy it though, and i think anyone who enjoys DIY and handcrafts would enjoy it.

All component parts are accurately laser cut and easy to push from the plywood sheets.Fitting the parts together feels smooth and positive and the assembly instructions are adequate. All in all an excellent way to fill a few hours.

Recipient of gift was a 10 year old who loved it.