Features 1. Fully considering the thermal expansion and contraction space of logs under different moisture content and air-dry density conditions, the high-precision steady-state laser cutting process is adopted, and the error is controlled within 5UM, which is equivalent to 1/20 of the diameter of the hair. Ensure that all parts are fully fitted and assembled, and each bayonet is tightly seamed. 2. Use durable and high-quality basswood, the wood grain is fine and uniform, showing silk luster, layered, wear-resistant, corrosion-resistant and not easy to crack 3. Double fine grinding, keep improving, feel smooth and not rough, Product information Product name: steam locomotive Number of parts: 349 pieces Assembly size: 375×120×185mm Product process: laser cutting Applicable age: 14 years old and above
1. Clockwork power: According to Newton's third law of classical mechanics, the power output is completed by the energy provided by the clockwork and the clockwork hook
2. Mechanical structure: The whole is a mechanical transmission structure. Through the meshing transmission of multiple sets of gears and levers, the power of the locomotive to drive forward is realized.
3. Smooth feel: Finely polished, smooth without burrs, in line with the nature of wood, the main transmission structure can be completed by pure physical splicing. One tenon and one mortise stick together, feel the fun of assembling yourself
4. Entertaining and entertaining: Wind up the clockwork, the wheels can turn at full speed and move forward, and there are multiple dynamic small organs in the car waiting for you to explore
