Long Blades

We made a wind turbine with 28 cm blades. There were 3 blades and were each shaped like a butter knife. We made them out of cardboard and glued straws on the back to put in the hub. We then stuffed them with paper so they wouldn't get squashed and rapped masking tape around the ends so it would stay in the hub. When we first tested our turbine, it couldn't spin because the blades were too long. We then made some adjustments and our final test went great!