3D Wooden Brain Teaser Puzzle for Teens Wooden Music Boxes Cello Model Kits for Adults DIY Building Wood Crafts Mechanical Puzzle Building Kits for Kids Age 8+Years Old

3D Wooden Puzzle: This wooden 3D puzzles are themed with cello, DIY kits for teens and adults to build. Wind the cello up, the bow will begin to move and the cello will start to play music

• We offer a detailed how-to booklet, featuring easy-to-follow, step-by-step tutorials. This wooden puzzle is suitable for adults, older kids and hobbyists of all skill levels. The wood puzzle is smooth and burr-free, so you can enjoy the process of assembling and exercise hands-on ability, thinking ability and observation ability
• We utilizes industry-leading technology to produce best 3d wooden puzzles. This wood STEM project uses high quality basswood plywood. All pieces are laser-cut and the error is less than 1/5000 inch, make sure each part fits tightly. The package contains simple tools, wax and sandpaper. Spare parts are also contained for accidental damage and loss
• Smooth Gear Driving: Turning the mainspring activates the self-drawing bow, driven entirely by precision-cut wooden gears. Watch as the bow slides autonomously over the strings as the cello plays a clear melody. Perfect for STEM enthusiasts and music lovers seeking dynamic decor
• Unique STEM Puzzle Gift: This wooden puzzle is not only a toy, but also a craft kit, which can be placed in your home/office as a decoration. Perfect gift for Easter's Egg Day & Mother's Day & Father's Day & Children’s day & Halloween & Thanksgiving & Christmas & New Year & Birthday and all of the year's festivals