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Build a Water Balloon Launcher that the Whole Family will LOVE!

July 4, 2016 by Sarah 18 Comments

Love this post? Then pass it on!

Build an awesome water balloon launcher – this allows you to convert a three man launcher into a one man launcher that is fun for all ages!

We have been on a quest for the perfect water balloon launcher for several years now.  In 2012, we built a sling shot out of PVC pipe.  It did not launch water balloons at all, although it worked for balls.  In 2013, we tried a catapult, and it didn’t work for water balloons either.  We quickly realized that their weight and their wiggly shape was going to make them difficult to launch! In 2014, we tried a simple catapult with a board.  It worked well, but this idea is best for big kids as it lacks control.  In 2015, we tried again.  We were still looking for something that even a young child could use to launch a water balloon!  We built a PVC pipe catapult that we found on the Home Depot website.  It looked promising with a bungee cord to provide tension, but it was another flop.  We could throw the balloons farther than we could launch them!  It is very difficult to transfer energy to a water balloon.

But this year… SUCCESS!

How to build an awesome water balloon launcher that the whole family will love!

This water balloon launcher requires some basic woodworking, but it is so worth the effort.  We had excited kids from the toddler on up!  We had teen boys saying, “Whoa! Awesome!”  We had neighborhood kids circling around on bicycles because they just couldn’t stop watching! (And yes, we did offer them a turn when I noticed them circling!)  And we’ll be using this for play dates all summer long!

Basically, this project combines a 3 man water balloon launcher with a sturdy wooden frame.  Three man launchers are fun if you have three friends of equal size, but what if three people don’t all want to play?  Or their heights don’t match up?  This way, anyone can shoot the launcher.

How to Build a Water Balloon Launcher

“Can I shoot another one?”

Water Balloon Launcher

We got the idea for the frame from this Angry Birds tennis ball launcher.  They had used a stretchy exercise band, so we tried that first.  Although it shot tennis balls well (for us too – not just in the post we read) it just didn’t work with water balloons.  They were impossible to hang on to!  Jordan found a 3 man launcher for $10 at Walmart, and the pouch with a handle made all the difference.

How to Build an Awesome Water Balloon Launcher

Can you see the balloon in the top right corner?

Water Balloon Launcher

This photo shows how far it shoots.  We aimed it toward the street across from our house, and big kids (10+) could easily shoot it three houses down!

How to Build a Water Balloon Launcher

NOTE:  This set-up requires adult supervision to watch for cars, and we also took breaks to go out and clean up all the water balloon pieces.  Don’t be annoying neighbors!

Ready to Build One?

This contains Amazon affiliate links.

Shopping List:

  • 3 – 8 foot long 4 x 4’s
  • 1 – 8 foot long 2 x 4
  • 2 – 3/8 inch by 6 inch screws
  • 6 – 3/8 inch by 8 inch screws
  • 2 – 5/16 inch x 4 inch screws with eye hooks (probably does not have to be this exact size)
  • 1 – three man water balloon launcher – We used the KAOS 300 foot launcher.
  • water balloons – we used the Bunch o Balloons, and they worked great!  Quickly fill 100 balloons.

Total cost:  $52 for the wood and hardware, plus $10 for the launcher (Walmart) and then $11 for the balloons.

Savings tip:  We used pressure treated lumber.  You could cut down the cost quite a bit by using regular pine boards.

Also, we’re going to show you in a minute how to take down the launcher for easy storage, so this is definitely something that can be used from year to year.

NOTE:  Neither of us have a whole lot of wood working experience, so if you see a better way to do this, go right ahead!

Step 1:  Cut the legs for the launcher using the 4 x 4 lumber.  Ours are 6.5 feet long.  Then cut two 2 ft. sections for the arms that stick up vertically.  Cut a 3.5 foot section from the 2 x 4 – this will be the support that goes across the front of the launcher.

Step 2:  Pre-drill the holes for the screws.

Build a Water Balloon Launcher!

Rather than drill through the bottom board and the vertical board and try to get the holes to line up, Jordan just pre-drilled the bottom board.  He used a socket wrench to insert the screw until it was just showing through the other side.

Build a Water Balloon Launcher

Then he held the board in place while drilling the screw through the wood.  It worked!

How to Build a Water Balloon Launcher

There is one 8 inch screw in each vertical arm, plus two in each support piece.  The two shorter screws are in the support 2 x 4 board on the front of the launcher.

Step 3:  Cut the support pieces.  For this step, we borrowed a power miter saw from a neighbor.  That is definitely an item on our wish list now!  Then screw them to the frame.

Build a Water Balloon Launcher

Step 4:  Add screws with eye hooks.  We put the hand holds of the launcher over each hook.  When you stretch the launcher to shoot it, it tightens around the hooks automatically.

 How to Build a Water Balloon Launcher

Then fill up balloons (you’re going to want a LOT) and start firing away!

How to Build an Awesome Water Balloon Launcher

SO MUCH FUN!

How to Build an Awesome Water Balloon Launcher

To store the launcher, remove the front cross piece.  We are keeping ours in the garage in three separate pieces.  If you’re planning to leave yours up all the time, I would add a second cross piece on the back end of the launcher.

Have fun!  If you build one, we would love to hear about it!

How to Build an Awesome Water Balloon Launcher

Filed Under: Family Fun, Summer, Things to Make and Do

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Comments

  1. TONI says

    July 9, 2016 at 6:48 am

    WAS MESMERIZED BY YOUR LAUNCHER !
    DO YOU THINK IT MIGHT BE MADE TOTALLY WITH 2X4’S IF THE OPTIONAL BACK BRACE WAS ADDED ?
    OUR LOCAL 4X4’S RUN ABOUT $24. EACH …. AND NOT THAT THE PROJECT DOESN’T LOOK WORTH THE INVESTMENT BUT CONVINCING THE POWER SAW WRANGLER/WALLET HOLDER MAY PROVE TOUGH.
    GREAT IDEA, THOUGH !

    Reply
    • Sarah says

      July 9, 2016 at 10:36 pm

      I think that the boards on the bottom of the launcher would be fine as 2 x 4’s, but I’m not sure about the posts that stand up vertically. They might be less stable. Maybe if you added supports on both sides?

      Reply
  2. Kellie says

    July 12, 2016 at 12:15 pm

    Oh my gosh!!! This looks TOO fun! Must try!
    Thanks for the great idea

    Reply
  3. Fivestarcoupon.com says

    January 16, 2017 at 3:48 am

    Nice post. Should try it 😀

    Reply
  4. WallyDog2149 says

    July 10, 2017 at 9:50 am

    I know I am probably necro-posting here. The beauty of this design is that for the larger, 100 yard and up launchers, the catapult design is scalable. That is a good thing because there is nothing obstructing the view of the gunner as he, or she, aims and angles the trajectory of the launch.

    Reply
  5. Joshua Yang says

    November 12, 2017 at 10:10 pm

    Is there a cheaper way to build this (two) for a carnival game booth for some little kids? Also, is there cheaper ays to do this (our team has a low budget)?

    Reply
  6. Bulkofdeals.com says

    November 14, 2017 at 4:50 am

    Nice Invention I think it’s a lot of fun 🙂

    Reply

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