BL Workshop

How to Make a Balloon-Powered Hovercraft




What You’ll Need:

  • 1 4-by-7-inch foam board (A thoroughly cleaned foam meat tray works great.)
  • 1 large flex drinking straw
  • Average size balloon
  • Scissors
  • Hole punch or pencil
  • Glue gun
  • Pin
  • Tape

What You’ll Do:
Step 1. Cut out the bottom of a foam tray. Be careful not to bend it.

Step 2. Place the flat foam under the body template and trace it by poking holes with a pin along the outline of the template. Also trace the straw slot. Trace two fins and the balloon ring using the same method. Cut out the foam shapes with the scissors. Make a center hole in the balloon ring with a hole punch or a sharp pencil point. To download a template to trace click here.

Step 3. Cut a sharp angle on one end of the straw and make a flat cut on the other as shown.

Step 4. Stretch and bend the straw, then glue the balloon ring to the flat end. Stretch the balloon over the circle. Carefully glue this assembly over the straw slot so that no glue is inside the straw and none of the straw or glue is below the bottom of the body.

Step 5. Glue the two fins to the rear sides of the body.

Step 6. Make an inflating straw by taking the leftover half of the straw and cutting two 1/2-inch slots in it. Roll the end into a taper with your fingers and tape together. Use the inflating straw to blow up the balloon from the bottom.  Pinch the neck of the balloon and release on a smooth, clean floor.

Hovercraft Tip
The hovercraft will work properly only on a smooth, clean floor. The bottom of the hovercraft should also be smooth and clean.

Comments about “How to Make a Balloon-Powered Hovercraft”

  1. concon says:

    cool!

  2. DJ says:

    aswome cool!!!!!!! :-) ,

  3. cat says:

    this seems like a very interesting project i will for sure have to try it out once i get the materials! :D
    <3LOVE ME

  4. cat says:

    this seems like a very interesting project i will for sure have to try it out once i get the materials

  5. zeek says:

    did nt work fr me

  6. yyt says:

    cool man it worked for me

  7. ninja11202 says:

    i cant.i dont have the stuff

  8. bobby star says:

    this is sick thx for the help

  9. lego man 22222222222221 says:

    i’m going to try it

  10. meep-meep says:

    i have built it with my cub scouts and they did work with time and patience!!!!

  11. wishbunny says:

    I do not have the matireals

  12. yo boy says:

    i tried it it did,nt work

  13. the J man says:

    i like this… it is to bad i do not have what i need. :(

  14. hello says:

    dos it even work

  15. Ace says:

    I got all the materials and cut everything to size, i just have to assemble it.

  16. Bree says:

    has anyone actually tried this and have it work??

  17. Poinator says:

    I don’t get the inflating straw

  18. moobs says:

    ithink im gonna try it

  19. Sparrow says:

    Who thinks the hovercraft will work or won’t work?

  20. Sparrow says:

    I think making a hovercraft would be so cool!

  21. Foo says:

    Wood a elmer’s glue work insted?

  22. earl says:

    what is the balloon powerd hovercraft all about

  23. pony girl says:

    i love hovercraft

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