Homemade Air Cannon

The video featured in this article demonstrates the function and design of a powerful form of air cannon that operates using a purpose made valve that opens very rapidly. This allows for a massive amount of pressurized air to be released at once to throw a projectile many hund ...more

Hand made air conditioner made of a foam lunch box, 5 volt DC fan, 4 AAA rechargeable batteries, and some ice. This homemade AC can run on batteries and you can plug directly into any USB port. Video: .

If you're breaking a sweat in the summer heat, but not trying to break the bank, this dead simple trick will show you how to make your own air conditioner for under ten bucks. Video: . What You'll Need 1 styrofoam cooler 2 dryer vents 1 small fan you've probably got lying aro ...more

You can do a lot with liquid nitrogen, including freeze and shatter gummy bears, make homemade Dippin' Dots, and scare the crap out of your friends by dipping your hand in it! If you can't get your hands on any, you can even make it yourself. Or, if you want to try something a ...more

Write about what you LOVE. EARN money for it. In this week's edition of Friday Fresh, we're doing a little something different. You may have noticed our banner touting our Love. Earn program, and a new section called New Articles By You. New articles on topics as varied as sn ...more

For some reason, McDonald's hamburgers are mysteriously unsusceptible to Mother Nature's inevitable toll of decomposition. Yep, you pretty much have to dip a McDonald's cheeseburger in acid if you want it to decompose. So we're left with the question: Why? Why does a McDonald' ...more

We've gathered some of our favorite pranks with the seasonally appropriate for all you college kids out there. You're more than likely cohabitating with a complete stranger, and what better way to make a good first impression and develop a strong personal relationship than sub ...more

WonderHowTo is made up of niche communities called Worlds. If you've yet to join one (or create your own), get a taste below of what's going on in the community. Check in every Wednesday for a roundup of new activities and projects. Thanks to all of our active moderators and ...more

Have you always wondered how to make a customizable and efficient TNT cannon in Minecraft? Are you looking to raid some bases on a PVP/factions/griefing server, but don't know where to start? Well, this tutorial will go over how to make a TNT cannon, and the different ways you ...more

Welcome to Minecraft World! Check out our advanced tutorials and come play with us on our free server. Do you need an extra boost in your game of PVP? Do you feel unapologetic to creepers? If you enjoy feeling like a madman, then this build is for you. After all, the only thi ...more

Home cooks know firsthand what it takes to make delicious and amazing food for friends and family. One of the most effective ingredients to making foods as delicious as possible is herbs. Unfortunately for some, fresh herbs are not always readily available. When they are, nat ...more

The joys of summer are many! If you, like me, live in a place where the summer is short, you’re going to want to maximize your fun in the sun by doing as many awesome things as possible before the sun goes back to wherever the hell it hibernates during the cold and dark times. ...more

take a sledge hammer head and a POWERFUL air cannon (this is a revisit to the cup test) then have Bam get shot in the NUTTS by it and then put a harness on him that can be ATTACHEDto a vehicle on the back ATTACH it and floor it he will cry like a BABY BACK BITCH and every one ...more

Build wooden horses for the boys to joust on. The horses are built from the shoulder up so they can be ridden low rider style, (and a fall won't totally take out a cast member. But if you feel like making scale wooden horses, be my guest.). The horses must have some sort of ha ...more

a cannon that shoots up in the air makes it more hurtful and difficult to go the the farthest, but the winner that gets the farthest gets SMACKED!!!

Gift-giving to your loved ones shouldn't be too time-consuming or strain your savings. Immortalize your special Instagram moments with family and friends by turning them into refrigerator magnets. For the stressed out family or friend, make homemade air freshener room spray, ...more

WonderHowTo is a how-to website made up of niche communities called Worlds, with topics ranging from Minecraft to science experiments to Scrabble and everything in-between. Check in every Wednesday evening for a roundup of user-run activities and how-to projects from the commu ...more

Video: . Potato Air Pen Gun an simple homemade toy airgun made just from a ball pen or water pipe, a chopstick, some potato.

We've seen compressed air power a homemade rocket, shoot erasers across the room, and even remove dents from a vehicle, but how about breaking a bike lock? As Theodore Gray of PopSci explains, no matter how tough your lock is, there's one thing that will defeat it every time— ...more

In this project, you'll learn how to re-purpose low-cost sprinkler parts into a high-powered CANDY CANNON. Be the coolest person on the block by building a pneumatic device that will launch candy 100 feet in the air—you can make it rain down all kinds of sugary treats!!! It's ...more

Jem Stansfield from BBC's Bang Goes the Theory has "put scientific theory to the test" with his Vortex Cannon. Filmed at 1300-fps, you can see the cannon knock down three different houses made of straw, stick, and brick with an explosive vortex ring. The vortex ring that come ...more

If a solar-powered air conditioner that requires no electricity or moving parts sounds to good to be true, well, then you're not as ambitious as this clever high school student. Instructables user Fozzy13 put together an awesome DIY tutorial on how he built his own air conditi ...more

I grew up in a household where bacon was considered its own necessary food group. My mom saved the bacon fat in a jar and reused it in other dishes, which my friends considered vile, unless they were also from immigrant families or the American South, where saving bacon fat ha ...more

Are you having problems because the game was released a long time ago and the more experienced players are better than you? Then you should be very excited to find out that I will be giving you some general tips & tricks about the different classes that I have learned the hard ...more

Nearly all humans (admittedly childishly) admire the ability to emit uncannily musical armpit or hand farts, or even rarer- mouth fart motor engine aping. However, it is the rare occasion that a performer's gaseous-sounding melodic notes are indeed truly gaseous (meaning liter ...more

Here is my entry for this weeks giveaway Tuesdays. It is my home made potato cannon rev2. The next step is to spray paint it so the purple isn't showing and to fix the valve. It was originally all 1inch PVC pipe but i cut the chamber and barrel off and made it 2inch PVC for bi ...more

Well here it is, this is an older pic but it still works, the only change from this pic and the current cannon is that I have put some duct tape around the PVC bonds and am planing on spray painting it. The compression chamber is over a foot and a half long at 2" diameter PVC ...more

The prank begins with a 21 CANNON Salute wake up call! As the victim jolts up in bed the bed will raise up and the victim will fall onto a water slide flowing with raw sewage. As the victim slides down the slide, bumps on the slide with knock him in the balls. We'll have fire ...more

Snowflakes aren't much to look at during a storm, but when you look real close, you can see just how marvelous they really are. But winter is over and most of us can no longer enjoy the intricate nature of ice crystallization, unless you're sticking your head in your freezer. ...more

Well, Ol' Man Winter is upon us yet again, blasting us with his icy breath. When I was a kid, I loved wintertime because it meant the prospect of sledding, snowball fights & missed school days in which to enjoy both. Now that I'm 45, however, my attitude toward the season has ...more

Balloons are fun, but the helium ones are always more entertaining. So today, we're going to learn how to make hydrogen gas by combining toilet bowl cleaner with aluminum foil. With hydrogen, you get the same lighter-than-air properties of helium, plus it will explode! Histori ...more

It's no secret that the Canon EOS 5D Mark II is being used in low-budget indie films, as well as big blockbuster movies from Hollywood. But it's also become a staple for television commercials. Geoff Fox has been a weather forecaster for over 28 years in Connecticut and can b ...more

For most street artists, it takes a considerable amount of time to paint large art installments on the walls of urban structures. The more time it takes, the better chance there is of getting caught, since nearly all of the rogue artwork is slapped on the sides of city and pri ...more