Introduction: Tennis Ball Squirtgun

Picture of Tennis Ball Squirtgun

A quick mod for a tennis ball. Can be used for a variety of purposes including: squirtgun, water bottle, ammunition, and more!

Step 1: Materials

Picture of Materials

Tennis ball (duh)
Exacto knife, or any other sharp object

Step 2: Stab It!

Picture of Stab It!

stab your tennis ball (just once) with the sharp object. I found it was much easier to stab on the rubber lines, instead of messing about with all the fluff.

Step 3: Fill 'er Up

Picture of Fill 'er Up

When you squeeze the tennis ball on either side of the crack, a hole will appear. hold this under a faucet and squeeze it a couple times to suck in water.

Step 4: Squirt

Picture of Squirt

To make the tennis ball squirt, squeeze it! the water will come out in a jet about 10 feet long ( if you squeeze it hard enough). the picture doesn't do the gun justice.

Other Ideas:

1) emergency water bottle
2) pranks >:)
3) flamethrower? (NOT A GOOD IDEA, I don't suggest you fill it up with kerosene)
4) weighted ammunition for something (ex. The Easysling)


Teriaki (author)2008-03-23

You gave me an Idea. It would be hard but imagine, taking a card board box and filling it with newspaper. Light it on fire and throw a oil or kerosene filled water balloon an watch it catch aflame!

-insertnamehere- (author)Teriaki2008-03-23

Now you have given me an idea..... what happens when you light a paper airplane on fire?

I did that once. I drenched it in lighter fluid and threw it and it was a mini 9/11.

kibbler (author)Millawi Legend2010-09-10

That wasn't funny. Not at all.

Millawi Legend (author)kibbler2010-09-12

You should of posted that comment the day before.

kibbler (author)Millawi Legend2010-09-13

whatsup with you and 9/11

peebs (author)-insertnamehere-2008-03-24

9/11. :(

Koolraap (author)peebs2008-04-08

thats like the lames joke ever, but totally funny :D

I concur.

technodude92 (author)peebs2008-03-24

...not funny...

DesignerUserName (author)2008-05-02

Fill (inject?) them with runny paint and there ya go. Modern art!

back up paint ball weapon

hcold (author)2009-06-03

And when you think about the 100,000 estimated civilians dead in Iraq using the knee-jerk reaction of this as a cover, you'd realise that's nothing more than a drop in a bucket.

thedog458 (author)2008-07-20

don't use kero for flame thrower its way to flammable use mineral trerps or metholated spirits.=) grate Instructable

hcold (author)thedog4582008-07-20

Methylated spirits has a was lower flashpoint that kerosene, which is what I assume you mean. Kerosene has to be "vapourised" before it will burn readily, like dropping a match into a tank of gas.

JerBear (author)hcold2009-06-02

won't dropping a match into a tank of gasoline just put out the match?

thedog458 (author)hcold2008-07-25

yer that what I meant but I was way tired when I write it lol =)

struckbyanarrow (author)2008-06-30

my sister all ways takes our dog to the dog park and each time i get 5 + free tennis balls

rockpop316 (author)2008-05-22

just fill a water gun with burning stuff

Koolraap (author)2008-04-09

well we just have a different kind of humor then, no hard felling and i just think all that terrorist stuff is just hot air (it's probably a bad translation of a dutch saying)

thomhaha (author)2008-03-25

Kerosene or gas will quickly eat the latex of the balloon. However, you can fill a balloon with butane (found with cigarette lighters). Any flame -- a match, a small torch -- will cause the balloon to explode. We did this in the circus as part of our fire-eating act: clown wandered in between fire-eaters with butane-filled balloon, fire eater placed lit torch under balloon for big bang and fiery burst. Best done outdoors or in a room with plenty of ventilation (gymnasium).

ichipoodle (author)2007-12-15

add lighter fluid!!!!!! muahahahahaaha!!! tennis ball squirting lighter fluid + flame = flamethrower ( possibly a famethrower if you burn down your house and cbs/nbc/cia/fox news truck passes by... maybe not the cia... they'd nuke you...

Folin1 (author)ichipoodle2008-03-24

Its called Guantanamo bay.

bumpus (author)2008-03-23

instead of shooting clay pigeons, shoot kerosene soaked tennis balls, PULL!!!

DaNerd11 (author)2008-03-23

Nice instructable, it is kind of hard to push though. Will it get like broken in after a couple uses?

Jake-off (author)2008-03-23

haha go Fahrenheit 451 on their ass

duck-lemon (author)2008-03-23


Clank_95 (author)2008-01-12

Nice! Something creative that you wouldn't think of!

Kendallkip (author)2007-10-26

hehehe.... Totally gonna give this to my dog.... hehehe. Jk i wouldn't do that to my dog :-) cool instructable.

connorcancount! (author)2007-09-10

haha simple and funny

burnoutxd (author)2007-08-30

i like the concept of such a simple everyday device becoming a new exciting toy! well done

Wetwillie1800 (author)2007-08-30

But Seriously, Could you imagine? Toss one of these onto someone elses tennis match for an exciting surprise!

If you wanted it to spray on contact, I suggest you make the hole bigger...with the small hole, it self seals itself.

Wetwillie1800 (author)2007-08-30

Wow... Fascinating... (Insert Awkward Silence Here)O.o

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