Robotime 3D DIY Wooden Puzzle Mechanical Gear Drive Locomotive Model Kits LK701 Age_12 Years Above the pieces are easy to

the pieces are easy to remove from the sheet of plywood

this series will offer you a chance to explore so many scientific principles while building planets

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Robotime 3D DIY Wooden Puzzle Mechanical Gear Drive Locomotive Model Kits LK701 Age_12 Years Above the pieces are easy toRobotime mechanical Locomotive LK701 train model is exquisitely designed. It has the real scene of driving wheels with shafts. With driving spring and gear trains, you can build the gadget all by yourself and make it run by a wind up. Best gift and hobby ever for crafters and mechanical lovers! Started by a spring driven engine, Locomotive LK701 is designed with a gear drive mechanism and will whoosh its way out after wound up. Precise laser cutting