How to make power car tire1. Prepare a bottle of water 1 plastic bottle.The rubber band 3-4 lines.The paper is thick 1 sheet.Skewer 1 wood.1 paper sheet.Glue, scissors cutter.2. Cut the cardboard box is a circle 2 band wrapped around the paper to reduce the friction.3. Bring wood plugged into the center of the wheel, two wheels. Then drops the glue to make tight.4. Use cutter drill bottle along a long, wide and long in moderation.5. Hundreds of rubber band together and were tied in the middle of the wood based on the wheel. The other end of the strap attached to the bottle mouth and close the lid.6. Rotate the wheel back to the rubber band"s energy to release the wheel, the car can run forward.
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