How to Make a Wind Turbine Out of Straws

Written by contributing writer
  • Share
  • Tweet
  • Share
  • Pin
  • Email
How to Make a Wind Turbine Out of Straws
Straws come in a variety of colours. (Photo by "jeltovski" at Morguefile.)

Making a small wind turbine out of straws can model larger-scale versions that generate electricity. This turbine project includes miniature airfoil blades and pivots on a central axis. It also can illustrate how "wind energy" is turned into "rotational energy" using "turbines."

Skill level:
Moderate

Other People Are Reading

Things you need

  • Plastic straws (one bag/box)
  • Safety scissors (see warnings)
  • Glue (nontoxic craft glue such as Elmer's)
  • Cardboard (3-inch square)
  • Thumb tack
  • Pencil eraser (standard type, from the tip of a pencil)
  • Card stock circle the size of a quarter

Show MoreHide

Instructions

  1. 1

    Select the straws to use for your turbine. Large straws catch more wind but tend to bend more. Bendy straws are inappropriate for this project because of the "bendy" portion.

  2. 2

    Cut two, 4-inch pieces of straw tubing. Cut down the sides of the tubes to separate the tubes into four half-tubes. Stack the half tubes to make sure they all are the same size. If not, cut them so they all are the same length and width.

  3. 3

    Cut the stack so that the straws slope inward on one side and are all uniform. The cut should start at one end (about 1/3 of the way in from the side) and continue down to the far corner of the straws. Keep the large part of each half-tube in the stack that you cut, which is now a "blade."

  4. 4

    Fan the blades out so they overlap at their wide base. Glue the blades in this position with craft glue. Wait for the glue to dry.

  5. 5

    Build the base/tower. Take a fresh straw and, using scissors, split the end into four pieces that you will bend outward like flower pedals. Glue these petals onto the cardboard so that the shaft of the straw sticks upward.

  6. 6

    Pull the eraser out of the end of a pencil. Slip the eraser into the tip of the straw. Pin the centre of the blade wheel to the eraser with a thumb tack, going through the end of the straw into the eraser.

  7. 7

    Blow gently into the blades of the windmill to make it turn.

Tips and warnings

  • The blade wheel should be separated from the straw with a small, flat piece of card stock between the straw and the blade wheel that is the size of a quarter so the blades don't brush the against the tower, which will interfere with rotation.
  • If the glue interferes with the turning of the blades, scrape the part of it off that interferes.
  • Beware of sharp objects like scissors, thumb tacks, and the edge of paper or plastic. Children should be supervised when making this project and safety scissors should be employed.

Don't Miss

Filter:
  • All types
  • Articles
  • Slideshows
  • Videos
Sort:
  • Most relevant
  • Most popular
  • Most recent

No articles available

No slideshows available

No videos available

By using the eHow.co.uk site, you consent to the use of cookies. For more information, please see our Cookie policy.