Wood Trick Mill The Mill is one of Wood Trick's most enduring and popular wooden models due to the beautiful design. The sails on the Mill actually spins. This wooden toy will perfectly fit both the interior of a modern office and an old house. Specs Complexity of Assembly: Medium Assembly Time: 1.5 Hours Number of Parts: 76 Materials: High-quality plywood Model Size in mm (LxWxH): 392 x 340 x 134 The wooden model kit comes with clear, simple and very detailed instruction with illustrations. Wood Trick wooden models are made from safe and environmentally friendly wood from all-natural trees without any added toxins or glues. Even children can play with WoodTrick 3D wooden puzzles, although we recommend parental supervision. Every Wood Trick model: enhances creative thinking skills, promotes critical thinking skills, develops problem-solving and reasoning skills.