Ready. Aim. Fire!
【ENGINEERING MARVEL】Based on great human engineering, LG504 combines the beauty of science and machines.Build your own set and wathc the marbles go crazy down the slopes and turns. It will create loads of fun and inspiration for you.
【REWARDING CHALLENGE】Highly satisfying and educational building experience. It requires dexterity and imagination but will also improve your understanding of STEM principles and kids’ motor skills. A brilliant way to tease your brain.
【IDEAL GIFT& HOWE DECOR】Perfect gift at any occasion for all ages: for quality time,birthday present,pastime, etc. Detailed design and attractive appreance also make it a unique decor to your home.
【NON GLUE& NATURAL MATERIAL】Lightweight models made of natural plywood. Precise laser-cut wood sheets with well-fit parts. No glue needed, easy to assemble together. Non toxic materials ensure you a safe building experience.



























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Wolfgang Buffy –
I am very disappointed.
The part does not work.
The balls always fall out of the gear.
The balls fall off the track.
One Part is broken. (A41)
Never again!
Friendly greetings
Sorry my English is very bad!
Kcatj –
The pieces are precisely cut and easy to break off from the sheets, no splinter. Most of them are tightly fit (except #A2 which is moveable). The instructions are clear and easy to follow. The “tool” piece is very useful too. I did not loose any pieces, but there are extra connectors, pins and stoppers provided just in case. The mechanism is quite cool and works well. I enjoyed building it.
Dave –
Amazing fit on the pieces. Everything slid together well and was snug. I’m really impressed at the craftsmanship. Very cool lifting mechanism.
Merv –
Excellent model, well put together. Videos not very helpful, but instructions good enough to get thru.
Beverly –
No video, help!!!!!!
Clint (verified purchase) –
Would love to actually have the assembly video available as advertised.