This classic windmill model is both stunning and fully functional, perfect for those who appreciate intricate designs. Made of eco-friendly plywood, it includes clear, colorful step-by-step instructions for easy self-assembly, making it an engaging project for kids and adults. The model features intricate gears and sails powered by a wind-up rubber band, offering a hands-on experience of windmill mechanics. Its open tower design provides a view of the internal mechanism, making it educational and ideal for painting or customization. The kit includes candle wax for gears, sandpaper, and rubber bands (included when relevant). With very high precision laser-cut plywood and sturdy construction, this 3D STEM model ensures durability without messy glue.Details:Natural woodPackage measures 7.7" x 13.4" x 15.7"Eco-friendly sustainable plywood materialVery high precision laser-cut plywoodSturdy construction, no glue requiredIncludes clear step-by-step instructionsFeatures wind-up rubber band mechanismOpen tower design for visible gearsIncludes candle wax, sandpaper, and rubber bands (when relevant)Total 227 pieces puzzleRecommended for age 14+ years