what are the specs to making a fog ball cannon from a rubbish bin, fog machine rubber band and garbage bag? Answered

hey, a while ago in high school out teacher was showing uss tuff to do with the transferance of energy and stuff like that, what he brought into class one day was a rubbish bin, with a hole cut out bottom, and on the lid, there was a rubbish bag(the big black ones) , on top with a rubber band taped to it. basicaly the way it worked was, the band is taped to the bag,m when you pull the band back, you pull back the bag also, which pucks in air into the hole in the bottom of the bin,but at this time the hole is actually the top of the cannon, as thats where the air enters and comes out. now when the air is being sucked into the bin, our teacher also had a hose from a fog machine attached to it, which made the bin suck up air, now when he let the band go when the bin was full of air, a ball of air shot out, and the fog remained inside that air ball so we could see where the ball went, which was around 20 meters, anyway, the fog ball could nock over polystyrene cups from 20 meters. i want to know exactly how to build one of these as i cant really remember how they look like as i have forgotton, i was reminded of these once when i saw one being used on rollercaoster, in the minishow, elliot and the surfing scientist.

Question by oldmanbeefjerky 8 years ago  |  last reply 8 years ago


Twist open plastic balls

Hey all, I'm looking for milky/fogged/hazy (I'm not sure what the right term) twist open plastic balls, like the one on the first picture. My plan is to put some LEDs in them to make glowing balls, but all I can find is clear plastic, as in the second picture. Any suggestion where can I get something like this? The size should be about  2" (diameter). -Greg

Topic by shinjin 4 years ago  |  last reply 4 years ago


Help With Resin

I don't know very much about resin's & need help on what to look for & in detail how to prepare it. What I want to do is fill a small vile with a clear resin & a black ball in the middle.  I tried filling one of these bottles with a two part resin & it nearly shattered from the heat. I tried using a clear hot glue, ether by gun or just melting it in the glass vile, ether way the glue fogged up. I need something like those awards you see on TV, solid acrylic with a face or globe, whatever the object may be, in the middle of the transparent award.

Topic by elkaddalek 2 years ago  |  last reply 2 years ago


Can you read it?

I've been meaning to show you this for a while, but I finally took some photos when I went to visit my parents. It's a clock. Really, it is. The arm rotates once per hour. The ball on the end is a camera, pointing at the ground. To tell the time, you walk around the clock to find out what hour is circled at the base of the arm, then look through one of the small round windows on the large sphere to see a TV that shows what the camera sees. The minutes are only marked every ten minutes, and in between those times the camera looks at featureless ground and confused people trying to see the time by looking up at the camera. On the hour, the arm raises in the air, and the camera has a look at the shop roofs, which are as ugly as commercial roofs the world over, and the speakers next to the benches (when they're working) make an odd fog-horn sort of noise. It's a bizarre, unfunctional object, in too small a space. Maybe if it was in a wide open square it would work as public interactive art, but here, wedged in a corner of a town with high unemployment it's a criminal waste of money.

Topic by Kiteman 10 years ago  |  last reply 10 years ago


Look here if you need Ideas!!!

Lots of people are asking for ideas for instructables. Here's a few ideas that might give you a new idea. If you have any ideas, post em here, so people can hopefully make em.Tech:* As suggested by Redrev: Take a DVD-Player/recorder that the DVD drive has died and take the tuner and video hook ups along with lcd screen(that shows the channel and dvd section numbers) and connect to the computer to watch t.v. and dvd's ala win-tv.Climbing Robot- a robot that can climb a little stairs of books or something. Or at least crawl.A model of an elevator- you know, you hit a button on a remote, and the elevator rises to that level.Model Train- one of those little trains. Would be cool to learn how to make one.Model Forklift- Its basically an R/C car, but can anyone make it lift a little notebook?Pencil Sharpener? (Electric)Introductions - Theres a lot of big words out there, but most of us have never heard of em. If you're good with something, why not shre your knowledge?FlexinolsmtOffBeat:Weird Uses for satellite dishes- I've noticed how many thing you can do with old satellite dishes. Be creative!Naruto Costumes and accesories (not paper)Dragon Ball Z style effects with smoke- how about pressurizing fog or something to have it shoot out of a tube? Would be neat.A DS Game CaseArtHow to draw Anime Hands- personally I find that hands are the hardest thing to draw. Maybe someone has a little trick to get em right?Bridge of toothpicks- Its a bridge made or little wooden sticks that can hold a grown man. I've seen it in a lot of science fairs, and it would be neat to learn how to make em.As much as I hate myself for doing this, yes this is another post of an old topic I had. Just saying it before anyone else.

Topic by Keith-Kid 11 years ago  |  last reply 11 years ago


Halloween: Angel Wings, Werewolf Costume, Jack-o-Lanterns

Sign-up for our newsletter here. Oct. 26, 2007 Welcome back! Our favorite holiday of the year is almost here and we're celebrating with a special newsletter! Here are some great Instructables to provide some inspiration for our DIY Halloween 2007 Contest. Be sure to take some photos or video of your creepy creations and enter to win some awesome prizes, including a trip to Maker Faire 2008! For those who are in the Bay Area in California, come by our Halloween Costume Ball tomorrow night! We want to see your costume! And for those who are near Boston, check out the Show & Tell at MITERSnext Friday, November 2. So what are you waiting for? Check out these Instructables and get started! How to make a pair of Angel Wings In this Instructable I will explain how to make a pair of wings which could be used to dress up as an angel, bird, or anything else with feathered wings!posted by T0BY on Oct 23, 2007 Realistic Werewolf Costume Create your own werewolf costume! Moving jaw, padded body, lots of fur!posted by missmonster on Oct 20, 2007 How to convert an old swingset into a guillotine prop for Halloween Reuse an old pile of lumber that used to be a wooden swing set for a nice prop for Halloween.posted by Strapped-4-Cache on Oct 14, 2007 Life-size Skeleton Pumpkin Carving! I've been doing these skulls for several years, but recently I got the idea that I could make a whole skeleton out of pumpkins.posted by mcraghead on Aug 21, 2007 Over $5,000 in prizes! How to Apply Elf Ears Want elf ears on your head? Then show this Instructable to a friend because you can't put them on yourself!posted by jforbess on Oct 12, 2007 How to make a cardboard costume helmet Helmets are usually one of the hardest and most expensive parts to make for a cool Halloween costume so here's a simple method using cardboard.posted by Honus on Oct 4, 2006 DIY Girl Pirate Costume HOW-TO Do you feel that the Girl Pirate Costumes you find in the stores are too expensive and not original? Well, make your own!posted by threadbanger on Oct 25, 2007 Solid-state Halloween controller and how to build a Haunted House Halloween is my favorite holiday, so every year I create some sort of a haunted house - all for the neighborhood kids, of course!posted by ewilhelm on Oct 1, 2006 Pirate Cannon - A working replica of a naval cannon that fires pneumatically Halloween has been a pirate theme around here for a while. I had the sword, I had the treasure chest, I needed a cannon. posted by Part Time Chef.com on Nov 4, 2006 Special FX: Almost-free Squirting Blood Effect This instructable will show you how to make a Swiffer WetJet mop into a sweet squirting blood effect. posted by that_one_guy on Jun 23, 2007 Tips for Halloween pumpkin pictures Carving a Jack-O-Lantern is fun, taking loving pictures of the spooky glowing face is even more fun. posted by ewilhelm on Oct 31, 2007 Win a free trip to Maker Faire 2008! Laser Vortex Use a laser pointer, small motor, and a mirror to create an effect similar to what you might see at Halloween Horror Nights but on a smaller scale and much cheaper.posted by mever on Oct 18, 2006 Be a Ghostbuster for Halloween! This is an over-the-top costume, but come Halloween it is oh sooo worth it. People go absolutely flippin' nuts when they see the whole getup.posted by Honus on Oct 4, 2006 Realistic Wound FX In this following you will see how to make a simple, yet realistic and reusable, latex wound effect on a tight budget. posted by Pull and Twist on Jul 17, 2007 Biohazard beer barrel A cheap and easy cooler that belches fog into your party. posted by zieak on Nov 1, 2006 T-Rex Rooftopper Make your own roof explode with this gigantic invader. posted by hirerob on Oct 31, 2006 Nazgul Mask for $15-20 This is a quick, 2-hour project I pieced together for one of my students who requested a Nazgul King mask for a production he was working on. posted by Drakz on Oct 27, 2006 How to build a Five Foot Tall Jacob's ladder This classic climbing arc completes any mad scientist's dungeon. Don't touch the electrodes: they're at 12 kV! posted by ewilhelm on Dec 13, 2005 Travelling Mexican Wrestling Ring If you're dressed as a wrestler, you need to wrestle. And if you need to wrestle, you need a ring to wrestle in. posted by rachel on Nov 19, 2006 Now go build something spookily awesome, and I'll see you next week! - Eric

Topic by lebowski 11 years ago