Fun Water Bottle Gun


Introduction: Fun Water Bottle Gun

About: A Northern Ireland based maker with a propensity to cause trouble and freshly constructed family.

I 'invented' this in RE and I'm sure others have done it before but mine requires no water and no materials other than the bottle

this is my first instructable by the way so I made a simple amusing one.

Anyone who put's grandad's eye out or anyone else's eye out or damages them in some odd way with idea takes full responsiblity by using this information to create the item and effect ilustrated

Step 1: Put the Bottle Under Pressure

The best way of doing this is bending it in half or crushing it down as much as possible untile the bottle is too hard to squeeze

Step 2: Firing the Cap

the cap should be just tight enough to hold pressure wrap thumb round the cap and in one smooth flick spin the cap off of the bottle it will fly away with a satisfying pop

another variation is to leave that 2/3 full fizzy drink for a little bit longer and flick the cap off, you'll be left with vapour flowing out of the bottle.

2/3 full bottle of fizzy water? shake it hard for 30 seconds and fire, it sounds like a gunshot and the cap will have much more velocity than the others

also if you're getting a drink it looks really cool to spin the cap off into your hand (this one is for still drinks



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    hey its you! BTW did u win the book contest with ur papre robot i'ble?

    yea i think so, they just have to make the book now :P

    you have been buying your carbonated water in lidl, i see ;) i have that bottle right here now lol

    2 replies

    Ya gotta love the lidl water. best tasting fizzy water ever... Also damn fizzy...

    i do this at school w/ my water bottles no one else knows how to do it exept 4 my friends so the looks i get are funny!

    1 reply

    yeah, i also found out why it sounds like a gunshot when you pop it right, the pressure can be up to 100psi from the fizz, as a way to do that with an empty bottle use an upside down can of deo and spray in to the bottle and close the cap, leave to warm up and it gets really highly pressurized.

    well service is good and as long as you did the install with the cd they don't mind upgrades like ram and graphics upgrades

    So they'll let you open the case and pull 'n' push bits in & out of the board without invalidating your warranty?


    Dell (UK) have outsourced their finance overseas. Credit Control have been very poor in terms of knowing what they're doing... and we've bought a few.

    yeah they have easy open cases for a reason on the older one we added an extra stick of RAM and a 256mb graphics card and they never had a problem with it, it had to be sent back for fix up because we somehow corrupted the harddriv and bios but it was under warranty so free repair