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. TImmy says:

    i luv this hovercraft of epicnesssss. It’s time to pony up! -Rainbow Dash

  2. says says says says says:

    you said it j man

  3. batman says:

    seems kool ill need to try it

  4. Fire ball 25 says:

    Awesome boss epic crazy sweet as candy

  5. How about it says:

    If you put wheels on it, it will be a air powered car

  6. scouter101 says:

    i just need the baloon and the straw and im ready to go

  7. boy says says:

    i love it

  8. coolboy says:

    i might just try this! :]

  9. Person says:

    Made this. Awesome

  10. readie215 says:

    I tried a different model and it didn’t work =(

  11. Thundurus guy says:

    I am going to do this in 5 weeks

  12. nick says:


  13. Bat says: says:

    Cool and awsome

  14. users890 says:

    seems easy

  15. lily been says:

    it is cool

  16. Buck says:

    Maybe I will try it

  17. shadow rider640 says:

    Wow that sounds really cool.

  18. rocknrollrobots25 says:

    :) gonna be doing this as a fun activity for some GATE elementary kids (outreach for my robotics team)

  19. joke says:

    doing it for science project. sounds fun.

  20. migdet in a high jump contest says:

    sounds cool

  21. bob says:

    i think it is cool

  22. baboon says says:

    best thing i ever saw

  23. 9 tailed fox says:


  24. killer says:

    it will never work

  25. concon says:


  26. DJ says:

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

  27. 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

  28. cat says:

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

  29. zeek says:

    did nt work fr me

  30. yyt says:

    cool man it worked for me

  31. ninja11202 says:

    i cant.i dont have the stuff

  32. bobby star says:

    this is sick thx for the help

  33. lego man 22222222222221 says:

    i’m going to try it

  34. meep-meep says:

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

  35. wishbunny says:

    I do not have the matireals

  36. yo boy says:

    i tried it it did,nt work

  37. the J man says:

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

  38. hello says:

    dos it even work

  39. Ace says:

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

  40. Bree says:

    has anyone actually tried this and have it work??

  41. Poinator says:

    I don’t get the inflating straw

  42. moobs says:

    ithink im gonna try it

  43. Sparrow says:

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

  44. Sparrow says:

    I think making a hovercraft would be so cool!

  45. Foo says:

    Wood a elmer’s glue work insted?

  46. earl says:

    what is the balloon powerd hovercraft all about

  47. pony girl says:

    i love hovercraft

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