Can a vacuum balloon be built with current material technologies? Answered

A balloon's bouyancy (lifting force) is a function of how much air it displaces. Today's balloons use hot air, hydrogen, helium and other lighter than air gases for lift. In 1670 Franceso de Lana, an italian monk, proposed the use of a vacuum. One major problem is how to make the structure light enough to support a vacuum without collapsing in on itself due to the outside pressure.

Question by sansoy 10 years ago  |  last reply 3 months ago



hot glue gun to hot air soldering iron ? Answered

Hello everybody, I have a burning question that has been bothering me for quite some time the question is: I have a hot (really hot) glue gun and I was wondering if I could put a copper ect. pipe through the glue stick opening and hook it up to my air compressor in an effort to make a hot air soldering iron is this possible?

Question by fidgety2 10 years ago  |  last reply 6 years ago


High Altitude Balloon

Hello guys, I have recently started working on a high altitude balloon project. I am planing on making a balloon that will go up to 100k ft and while it is travailing up to that altitude it will be snapping pictures and taking videos of the sky.  I am publishing all the updates related to this project on a project dedicated website www.AggieSpaceProgram.com . However after i am done i will be also making a very deatailed instructable on it so others may fallow in my foot steps. I just wanted to share my project with the instructables community, L4I

Topic by looking4ideas 8 years ago  |  last reply 7 years ago


Where are the vacuum balloons?

I am interested in making a vacuum balloon. I have been looking around and I can't find a single vacuum balloon that floated. If anyone has any links, pictures, videos, or suggestions they would be very helpful. The closest I found is this and it collapsed just before it floated.http://s113.photobucket.com/albums/n219/coreview2/?action=view&current;=VB03.jpg

Question by Danjor 6 years ago  |  last reply 6 years ago


Self-Flying Balloon

I have an idea to make a bunch of smallish balloons that have a LED sinside and small circuits that would control small heating elements to randomly change the density of the air inside the balloons, making them rise or fall. Just as a fun art project, making a bunch of them and letting them into a room for a party or something. A couple of issues I have: I'm having a hard time figuring out how to calculate the buoyancy, though that may have to come later once I decide on all the components. I don't want to use any lighter-than-air materials like Helium, just regular air heated up. I've been trying to find some small ceramic heaters, but I haven't had much luck. Ideally, something like this seems like it would work perfectly, but I need to find some that I can buy in quantities less than 20,000: http://cdsk.manufacturer.globalsources.com/si/6008801115398/pdtl/Heating-element/1070197186/Surface-Heating-Elements.htm Whatever I choose would also need to heat up and cool down pretty quickly so the rising/falling would have a stronger effect. I might be asking too much here. I'd need the whole circuit to be pretty small and lightweight. If I use an Arduino Uno, could I just transplant the ATmega328 into the balloon? If I used a small watch battery, would that even provide enough juice to operate an LED and a heating element? Anything bigger seems like it would be too heavy. As for the casing, I plan on whipping something up in Blender and printing it out in lightweight plastic. It would have to hold the circuitry and be airtight to keep the balloon sealed. Any thoughts or ideas would be greatly appreciated!

Topic by jemtan990 5 years ago  |  last reply 5 years ago


has anybody made a hot-air gun out of a soldering iron and a hair-dryer??

I searched around and but there are 'ibles using desoldering irons and vacuum pumps; not actual soldering irons. I wanted a hot-air gun for desoldering an SMD chip.

Question by rammstein2 6 years ago  |  last reply 6 years ago


How can I make a giant version of a latex (rubber) balloon?

I wanted to make a giant balloon to tie onto myself and jump up and down really high. I suppose a pogostick does the same thing, but a giant balloon seems cool as well.

Question by ANDY! 8 years ago  |  last reply 8 years ago


Make water balloons explode in mid-air

Hello to all, This is my first post, so if I make a mistake I apologize in advance. I am looking for a way to make water balloons explode in mid-air. It must be safe (i.e. I am not going to shoot them out of the sky with some sort of projectile) and I would prefer not to utilize some form of explosive device. I would prefer something I could time and continuously reproduce. Whether it be an apparatus or a chemical reaction. It has to be safe to be done around children, environmentally friendly, in other words I don't want to cause anyone or anything harm other than the balloon itself. I would like to be able to make the balloons burst at either a specific time after launching or throwing or have them burst after reaching a certain height in the air. If I can figure out a way to this I will gladly share my whole idea. Thanks in advance.

Topic by feign 12 years ago  |  last reply 8 years ago


Make water balloons explode in mid-air

Hello to all, This is my first post, so if I make a mistake I apologize in advance. I am looking for a way to make water balloons explode in mid-air. It must be safe (i.e. I am not going to shoot them out of the sky with some sort of projectile) and I would prefer not to utilize some form of explosive device. I would prefer something I could time and continuously reproduce. Whether it be an apparatus or a chemical reaction. It has to be safe to be done around children, environmentally friendly, in other words I don't want to cause anyone or anything harm other than the balloon itself. I would like to be able to make the balloons burst at either a specific time after launching or throwing or have them burst after reaching a certain height in the air. If I can figure out a way to this I will gladly share my whole idea. Thanks in advance.

Topic by feign 12 years ago  |  last reply 12 years ago


I need a compressor that can blow up balloons VERY FAST what compressor is best to do this?

I tie balloon for kids for free. I believe kids need a break and so I have a saying; put down a beer to spread some cheer. I tie all my balloons now for Free using all my money I use to spend on booze. Can someone help me find a compressor that has a VERY high CONSTANT output to blow up hundreds and hundreds of balloons> I did have a King Canada compressor 4 gallon model. I can blow faster than it can, almost. But not efficient. Would any one care to take a stab at helping me? The season is gettnig busy and I have many kids to tie for. A HUGE FOLK Festival FULL Of hundreds of kids and tons of balloon displays to blow up round balloons to do a dazzling display is coming fast. Plus the Ride to Conquer Cancer is coming up and many World Championship races that I announce at. There are many cycling Championships I attend and people that count on me to do some dazzling displays for kids. I also go to skate board parks to tie balloons too! FREE for the rest of my life to help kids be happy and teach them to choose smart. I hope someone knows or can steer me right. Thanks so VERY SINCERELY ! Crazy Larry Banff,Alberta Canada

Question by Crazy Larry 7 years ago  |  last reply 4 years ago



Can you push the neck of a ballon into its self, thus plugging the balloon and preventing any air to come out? Answered

What is(if there is any) the method to do this? I've always wondered this and want an answer. (i don't even know if it WOULD plug the balloon when it was pushed inside.)

Question by 9 years ago  |  last reply 9 years ago


Use a Co2 regulator for air?

Can I use a Co2 regulator to regulate high pressure air.  I am trying to build a high pressure system using a scuba tank or paintball/airsoft tank to operate air tools, pressurize pipes, fill tires, inflate balloons, dust work areas and computers, etcetera.  There are C02 regulators but not many 'air' regulators.  I just want to use air and not Co2.

Question by RandallIja 9 years ago  |  last reply 9 years ago


The Most Useful Machine, Air-Quality Balloons, Bookshelf Bed

The Most Useful Machine Air-Quality Balloons Bookshelf Bed Camera Bean Bag Ten Green Coffee Table Stretch Chainmaille Bracelet Steampunk Bristlebot Ice Cream Pops Cute Pillowcase Shirt Folding Solar Panel Wallbots The Confuzzle PVC Rotor Blades Stitch and Glue Kayak Kentucky Fried WTF

Topic by randofo 8 years ago


How do I make custom balloon art? (Not balloon animals)

Hi I was interested in making balloons in different shapes. Similar in make to beach toys or those inflatable chairs. I'm having trouble finding information on how to make them from scratch. I'm assuming they're made of vinyl sheets but I'm not sure of the method to cut and connect them together, or where to obtain those air valves common on all inflatable balloons. Any information would be great. Thanks!

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


Alternatives to kite power

I was looking though my old MAKE magazines, and found the schematics for a Kite Aerial Photography rig. For those unfamiliar with the term, it's a camera attached to a kite that allows for aerial photographs to be taken remotely. However, I live in Texas, and the only time the wind blows here is when it rains. And rain means lightning. So, rather than risk electrocution, I'd like to come up with some alternative methods of lift. I was considering a large helium balloon (like a weather balloon), but I was wanting something that I could say I made myself. Then I considered hot air, but I'm not sure how large a homebrewed hot air balloon would have to be to lift a camera. Any suggestions?

Topic by ninepound 11 years ago  |  last reply 11 years ago


How to mount Peltier elements?

A peltier is a element that gets very hot on one side, and very cold on the other side. Cold enough (with enough power) to make frost all over it. So. I got one, I want to make nice cold cold air. I read wiki, if you don't heat sink it, it will self destroy. If I heatsink the cold side, then a fan on the heat sink to blow the cold freeze air, will it be fine? Or must I cool the hot side too? Peltiers are cool :D

Topic by Killa-X 11 years ago  |  last reply 7 years ago


masynmachien's time as an AIR

I had the honour and pleasure of spending the month of July 2013 as an Artist in Residence at Instructables HQ. An unforgettable experience! I feel like I cannot even begin to describe it, so forgive me for keeping it simple. The most tangible amazing thing is the unbelievable workshop, a true makers heaven! I mainly worked on the laser cutters and the 3D printers myself, but these are just a part of the new workshop set up at Pier 9. There’s also the experimental kitchen, the sowing corner, the electronics lab, the high-end CNC machines, a complete wood shop and a full blown metal shop. More importantly however was working among the people behind Instructables. To experience up close how they work very hard to make Instructables not only the biggest and best Show-and-Tell buy also the best “maker medium” ever. Having just moved to the new facilities at Pier 9, there was a lot of extra work to get the workshop accessible and operational, but they moved mountains to get us Artists in Residence onto the machines and making things. Working alongside three other Artists in Residence was also unique chance. Usually, when I’m surrounded by makers, most of them aren’t older than 12. But even as each of us had his inner kid very much alive, having some serious making going on around you is very inspiring (as some of my Instructables will show). I also very much appreciate how my daughter Tika was warmly received when see joined me at Instructables HQ. One month was far too short to spend with the people at Instructables HQ.  I was constantly torn between on the one hand getting to know the people better and on the other hand leaving them continue there hard work and trying to make as much things as possible myself. And to make it even harder there were the lures of the magnificent city of San Francisco and of the Bay Area. My conclusion is clear: I want to come back! But then, being a month away from home is not easy either. Tika joined me during the second half of my stay, which was great, but I missed my wife and youngest daughter. Back home in Belgium I’m first taking some rest, spending time with family and friends, working on some due home improvements and preparing some kids workshops. Writing up the Instructables on the projects I did will take some time. They will be published over the coming months. After all, I have about 15 new projects to document. The thread through my AIR was a laser cut (advent) calendar. A series of toy/gift assembly kits designed to be laser cut out of one acrylic sheet and to be wrapped into a cardboard package opening separately on each kit. The only parts added to the laser cut parts are some elastic bands, screws and nuts. The idea is to have a calendar that is easily made in several copies, with designs accommodating for thickness variations in the acrylic sheet and a concept of cutting and wrapping it all with little handwork. I managed to design, cut and test 13 different toys/gifts. I consider it the first chapter of a full advent calendar. I will make an Instructable on each of the 13 and put them in a collection, together with an Instructable on the calendar concept. The eye catcher of my stay was an iPhone/iPad (or Android) controlled RC Blimp with video feedback. For this I used the plug-and-play Dension WIRC system. This system leading to rather heavy build (200g) comparted to my other blimp projects, I decided upon using a large spherical balloon. From this (and from watching Doctor Who) sprung the idea to make it into a large eye. I named it ‘In the blimp of an eye”. The project that was the most of a learning experience was designing and 3D printing nested dolls. Deviating from the classic Russian dolls, I learned how to design these in 123D Design, how to calculate sizes and experienced the possibilities and limitations of different 3D printing techniques. I hope you will enjoy reading the resulting Instructables, just as I enjoyed doing these projects at Instructables HQ. I want to thank once more the people at Instructables and Autodesk for this wonderful opportunity. Thank you, thank you, thank you! Yvon Masyn aka masynmachien

Topic by masynmachien 5 years ago  |  last reply 5 years ago


Low hot water pressure

I the past 4 months I have replaced the water heater, water softener, and the pressure tank. Everything was working fine until I developed a leak in a PVC elbow from the outside water supply As soon as that was replaced and I turned the wter supply back on my hot water pressure dropped to almost nothing in all of the faucets. I am thinking some scale got lodged in the outflow pipe from the water heater and I need to apply high pressure air from one of the faucets to force this out.

Question by 10 years ago  |  last reply 9 years ago


How do I get a solid balloon shape? Using a 3 Foot diameter latex balloon, need to fill with a solid, smooth material?

First:  Thank You Already for Considering helping me. I need the shape of the Inside of the balloon - not the outside like papermache'. I tried Canned Foam Insulation "Great Stuff" brand; but it didn't expand and solidify.  Then I need to cut it in half to get a hemi-sphere / hemi-balloon shape.  A shape like half an egg, but 30" long, 19" wide, and 9" deep if laid on the flat side. Will Gorrilla Glue puff up and stretch out the balloon?  Is there some kind of expanding urethane that doesn't need free air to cure? Will a rubber mold making liquid like Vytaflex fill a balloon to it's "real shape" and cure inside without air?  http://www.youtube.com/v/MJ9lgZ3V90o&autoplay;=1 is a video of making a sink mold from an existing vessel sink.  But I don't have an original of this shape to make a copy of. Ice isn't permanent enough, but would be the perfect slick surface texture.  I don't have the tools to cut a 30x19" sphereoid in half neatly. The goal is to get a solid shape with a smooth surface to use as a mold for pouring material over to achieve a "bowl" shape with a very smooth interior surface and a hand formed outer surface. thanks again

Question by rubyintherough 7 years ago  |  last reply 7 years ago


Liquid Cooling - Body

Its so hot and... well.... I made a device to cool myself down! I might make an instructable, but basically, I took two 20oz bottles with caps, poked 2 holes in the top of one, 1 hole in the other. I then ran tubing between the two, and in the bottle with 2 holes, I added a bit of tubing to put the air intake below water level. I filled the 2'holer up with icewater, and blew a bit on the air intake to get it started. It works very well, to say the least! :P

Topic by zachninme 11 years ago  |  last reply 11 years ago


Small VERY Hot Plate

I am looking for someone who can design for me to make or make for me a specialized hot plate. I need it to be small like 3" by 2" and to get very hot as much as 700 degrees is desired. I want the power source to be 400watts. I know this seems hard but my reasoning is that the smaller size means higher temps with less wattage. I would use this as a hot plate that evaporates liquid from an airstream as it passes by - a dryer if you like. I would use 2 to cause the air to have to pass both in a zig-zag path. I would like to have a solid surface so eventually I see the plate encased in ceramic but for this it need only be metal. Can you help? Contact me here on the site to discuss more details Coog

Topic by coogrrr 6 years ago  |  last reply 6 years ago


How To Inflate Plastic Bottles- into balloons- With Heat and Air Pressure?

1).  I would like to use PET drinking water bottles  and polyethylene plastic bottles ( taco Sauce, mustard, plastic juice bottles)- for insulation in an  attic? Choice 1). using a heat source like a heat gun and my air compressor can I inflate old PET plastic water bottles - into balloons to act as insulation spheres ?   Each week  I would spend time turning the plastic bottles into thin-walled spheres that would fill up the attic with light-weight spheres- maybe the size of a soccer ball?  . 2). If Not  choice 1). lets learn how to process plastic bags and packaging into a shredded stringy material to do the attic insulation job. The source of bottles is endless and I hate recycling these to the city and then purchasing expensive fiberglass batt insulation at $40 per roll.  Any DIY wizards try this stuff?  I could literally mega-insulate the attic. If treating the material with Sodium tetra-borate  borax -to get a fire resistance that is doable too. They make clothes, blankets, molded items and padding routinely from old bottles: Why can't I? I would build a shredder or modify a branch shredder machine to do this and make it my recycling hobby over the long term.

Question by KM6 3 years ago  |  last reply 3 years ago


Instructables in World Changing

Instructables was given a very nice mention in Worldchanging: A Users Guide for the 21st Century . Our two pages include 3D chocolate printer made from LEGO, 5pcb (etch your own circuit boards), Autonomous, Self-Assembling Robots, Candle Powered Hot Air Balloon, Canned Applesauce, pedal powered air compressor, and SpokePOV: LED Bike Wheel Images.

Topic by ewilhelm 12 years ago  |  last reply 10 years ago


Is a hair-dryer hot enough to deform PVC? Answered

A future project requires the slight deformation of cut PVC waste-pipe. Not soft enough to melt, just enough to slightly open a cut half-pipe, then keep it there when it cools. Will a hair-dryer provide enough heat, or will I have to invest in a hot-air gun?

Question by Kiteman 9 years ago  |  last reply 3 years ago


Airsoft grenades that dont used explosives, Vinegar or baking soda, or balloons filled with water and bbs?

Sorry about the pickiness of the nade but i dont have access to that stuff and Balloons just dont work ( unless if u can find a good idea of how to use balloon nades).

Question by Matt21497 10 years ago  |  last reply 9 years ago


What is a cheap quiet way to cool a room?

I just moved into a new room, its freaking hot, so I bought a cheap fan... it's not loud but enough to keep me up at night.

Question by Ledviper 9 years ago  |  last reply 4 years ago


I want a balloon to "pop" at the touch of a sharp knife. Storing a ballon to optimum stretch inside a cake?

I made 1 excellent exploding cake with a balloon. I haven't been able to replicate the event as successfully. I need the balloon to be maximally inflated, to the point it will go "pop"! when the merest touch of a sharp blade touches it. Also if the balloon is concealed inside a whip cream, cake combo, does hot or cold temperature affect the expansion of the balloon? Is there anyone out there who has experience, or can solve this dilemma for me?

Question by 9 years ago  |  last reply 9 years ago


Peltier Air Water Harvester

I was looking around at some of the air water harvesters tonight and of thinking about using a Peltier unit for one. Just started thinking and I know very little about either one of these. So my question is, could you use the cold side of a peltier to get an air current down to just below dew point causing humidity to condense on maybe a heat sink or something so it could be collected and use the hot side to create the air flow by a chimney effect? No moving parts.  Solar power it so it an be used anywhere in the world? Could be something that could supply clean water to people in need.

Question by dayfid12 7 years ago  |  last reply 7 years ago


Bad idea to put fans in air duct? Answered

Im not sure what its called but the end of the air duct I guess. I wanted to put some computer fans in them and I wasnt sure if this was a bad idea. My rooms hot and the rest of the house isnt. I get cool air through there but doesnt come out far enough to get around the room, I figured if I put fans it would help and im not sure if fans in there is a bad idea. I already have a fan in my room but doesnt help.

Question by Munchys 8 years ago  |  last reply 7 years ago


Gas soldering iron instead of hot air rework station?

I dont want to pay for an entire rework station... so would it be possible to use the hot air tip of a gas(butane) powered soldering iron instead? The portasol from Weller sounds nice, but i also found a ~ $20 from radio shack i might want... anyway it doesnt matter which one, just like will it replace a rework station ...SAFELY?

Question by raykholo 9 years ago  |  last reply 9 years ago



Sky Lantern

Has anyone built anything like this, or know of an instructable that could help to design something like these floating, hot air balloons that are popular in Thailand?I am looking for, in particular, the method of obtaining or creating the fire-proof paper or fabric that is used for the balloon itself. Also of interest is the object at the opening of the balloon that is lit and provides the heat. It doesn't look like a small candle, like I thought it might be. But rather, it's a small pad, about the size of a note card (3x5") that is flammable and completely burns. I think I could figure out the metal loop and bamboo skewer cross-bracing that holds the base of the balloon open and that holds the lit pad in place.You may send responses to my email, as well...uncleplayground (at) yahoo (dot) comThanks!Sky Lantern

Topic by uncleplayground 11 years ago  |  last reply 5 years ago


Hot Air desoldering many pin thru hole parts? Answered

I have asked around but no answers that really helpedBasically, im just asking if anyone has personal experience in succesfully using a butane soldering iron with hot air blow tip to desolder many pin thru hole parts such as headers, connectors and large DIP packages.Yes, i know that it is possible to do this but i would just like to hear from anyone who can tell me that they have succesfully done that with minimal damage to the componentsi already asked the exact same question about doing this for surface mount components, and there are more details there. Well, sort of. Anyways, here is the link:

Question by raykholo 9 years ago  |  last reply 9 years ago


Without Hot Air: Mackay's new Book on Global Warming

My friend told me about a new book by David Mackay. I've added screenshots of two of the really nice graphs he put together in his book. Says my friend:Forwarded Message:David Mackay, Cambridge U Physics Professor and a flat-out rockstar inthe field of statistical inference, has written a book on SustainableEnergy, which he is (as usual) giving away for free on his website. http://www.withouthotair.com/There's also a few slide decks for the overview: http://www.inference.phy.cam.ac.uk/mackay/and a blog: http://withouthotair.blogspot.com/I'm not much through it yet, but the gist seems to be putting realnumbers on the size of the energy problem, much as Saul Griffith hasbeen doing. It's written in his usual style, which is to say it readslike common sense you feel you should have known all along.

Topic by nagutron 11 years ago  |  last reply 11 years ago


Malware from http://www.scroogle.org/cgi-bin/scraper.htm in Instructables comment?

PMbeartoe 's comment(Jul 28, 2011. 8:30) on Solar Hot Air Balloon Message-in-a-Bottle instructable referred to http://www.scroogle.org/cgi-bin/scraper.htm I used it for a search.  Shortly afterwards my wife use google. The google results page would not scroll. and also a google security update was suggested. I accepted the update and Microsoft Security Essentials immediately warned of malware and cleaned the just installed files from the downloads folder. A scan was advised and actioned.  Backdoor:Win32/IRCbot.EW (Aliases: Suspect-AC!E30DD121029B (McAfee)    WORM_PUSHBOT.SMA (Trend Micro)    Trojan.Win32.Swisyn.ajmj (Kaspersky) ) had been detected in  ...\Downloads\Google_Security_Update9.2b.exe Can any one advise if the malware came with scroogle?

Question by davatr 7 years ago  |  last reply 7 years ago


Top Builder Challenge: Balloon Car

Take the Challenge! Become a Design Squad Top Builder! Design an air-powered balloon car that can zip across the floor. You can use all kinds of materials for your balloon car's body, axles, and wheels. But the jet must include a balloon! Watch the video to see Nate and his friends Desi, AJ, Zara, and Anna design their balloon cars. You can find instructions to get started on your own balloon car in our Build section. Enter the Top Builder: Balloon Car Challenge by logging in to the Design Squad website and submitting a photo of your design using this form on or before March 27, 2013. Be sure to tell us how far your balloon car traveled! We'll highlight some of the most creative balloon cars and then you can vote for your fave. The Builder with the most votes earns a special sticker for use on the Design Squad website.

Topic by designsquad 6 years ago


Would a Tesla Turbine work in a solar updraft tower?

I was playing around with making a small scale solar updraft tower and I was curious if I could use a tesla turbine instead of a turbine with blades. Would the Chimney effect be enough to drive a tesla turbine?

Topic by thecoonskin 7 years ago  |  last reply 7 years ago


Insulating Ducts

I was thinking about opening one side or the top of the "metal box" that "insulates" the out/intake ducts of HVAC unit, and filling that space with styrofoam popcorn used for shipping fragile stuff. We recently had a couple of trees cut down in the backyard and now our HVAC unit is completely exposed to the sun for most of the day! We bought a shade to set up but I was thinking the styrofoam would just be a little bit more of a help! What do you think? All ideas and advice would be greatly appreciated!

Topic by thickneckarts 8 years ago  |  last reply 8 years ago


Lighter than aircraft

People should make ibles about lighter than air aircraft. Then we can go flying

Topic by ANDY! 8 years ago  |  last reply 8 years ago


My air conditioner is broken beyond repair, any ideas on how to keep the house cool until we move? Answered

The people we rent our house from decided to "fix" the air conditioning to the house by getting rid of the unit for the upstairs and just making the duct for the one downstairs bigger. Now the ducts are basically clogged with dust because there's no filter that will fit the main intake and the main unit keeps freezing up because it can't handle cooling the entire house. We live in Florida, so it get's very hot, very fast. We're currently looking for a new house, but does anyone here have any creative cooling ideas for until then? I currently have fans upstairs blowing all the hot air out, which is working a little bit.

Question by tieguy 8 years ago  |  last reply 4 years ago


Robotic Gripper Runs on Coffee and Balloons - Updated with video

I'm just on FIAH with these Topics. But this one's cool too. Via ScienceDaily: A collaboration between researchers from Cornell, University of Chicago, and iRobot has resulted in a robot gripper that conforms to practically any object. From the article: Here's how it works: An everyday party balloon filled with ground coffee -- any variety will do -- is attached to a robotic arm. The coffee-filled balloon presses down and deforms around the desired object, and then a vacuum sucks the air out of the balloon, solidifying its grip. When the vacuum is released, the balloon becomes soft again, and the gripper lets go. This sounds like another hi-tech device that could easily be duplicated by a DIYer. All you need is a balloon, coffee grounds, and a vacuum pump. Update 2 November: Found the video! It gives a much better idea of how the thing works. Via, image from same.

Topic by CameronSS 8 years ago  |  last reply 8 years ago


The Best Compressed Air Weapon EVER!!!

This Compressed Air Carbine I mad is so fun to shoot you should try to make one!!! It is easy and cheap to make, fun to shoot, and you can shoot anything out of it!!! I like this Compressed Air Carbine because if it's ability to shoot anything. Iv'e shoot Paintballs, Airsoft BB's, BB's, Marbles, Fishing Weights, Arrows, Marshmallows, Grapes, Sand, Rocks, Water Balloons, and Nerf Darts! I love this Carbine!!! Right now i'm working on a mod for it where you have a fishing reel on he side of it and you can shoot your line out of the Carbine instead of having to cast, and your line goes really far! Please tell me what you think about this instructable, and what can I do to improve the Carbine. PVC Compressed Air Carbine

Topic by clobber24 5 years ago


Pedal-powered airship gets half way...

A French amateur pilot's attempt to be the first to cross the channel on a pedal-propelled airship has failed.Stephane Rousson, 39, from Nice, took off from Hythe on the Kent coast at about 0800 BST and was half-way to the French coast by 1300 BST.But he was hampered by a change in the wind direction and called off the trip 11 miles from Wissant in France.Mr Rousson said: "I'm not disappointed. I feel happy because it had nothing to do with any technical failure."During the challenge, Mr Rousson was suspended underneath the balloon envelope in a carbon fibre gondola, powering the two propellers with his feet using a bicycle-like contraption. The most amusing thing about the whole trip is the safety system:Just in case Rousson found himself flying irretrievably high, he hung an open penknife from the gondola framework, with the intention of popping the balloon and heading for a splashdown.Sorry, that's the second most amusing thing. The most amusing thing is the pilot's childhood inspiration - ET.BBC article

Topic by Kiteman 10 years ago  |  last reply 9 years ago


Can I combine my oil-fired forced air furnace & oil-fired domestic hot water heater? And then tie in solar heated water?

Currently, we have an oil-fired forced air furnace and an oil-fired domestic hot water heater.  I would like to combine the domestic hot water heater and the furnace somehow so we can heat them both by solar heated water from a panel on the roof, and use oil as a back up fuel.

Question by cscott2008 9 years ago  |  last reply 9 years ago


can DIY hot air soldering iron solder other smd component such ic, transistor,and other smd component.?

Without destroying anything,especially the board,

Question by hore 9 years ago  |  last reply 8 years ago


How can i connect a solar air compressor to an A.C. so that it can cool my house?

I wanna build a project for my engineering educational syllabus plz guide me anyone how can i use solar air compressor to cool my house by A.C. Climatic conditions of my town :- Hot round 38/22 Celsius. and mostly moderate humid. Please guide me about my project

Question by 10 years ago  |  last reply 9 years ago


house airconditioning pipe insulation smells like burning truck brakes?

I smelled "burning rubber" in my garage; noticed that rubberized insulation on pipes leading outside to the a/c compressor was worn, aged, and peeling. (20 yr old pipes) Question: Does a/c pipes get hot, causing enough heat to melt insulation? The pipes run thru the exterior wall, up and into the garage, to the central air unit. Is the insulation only outside, or the entire length of pipes? Is this repairable or should I call an expert (that will probably charge me an arm and a leg!!) What type of fix-it material do I buy? Can I get this at Home Depot or Lowe's? Why am I smelling it in the first place and where is the smell coming from?? Can this cause a fire!! Thanks.

Question by normreyes315 9 years ago  |  last reply 9 years ago


If I channel the hot air from my CPU cooler directly to the outisde of my case: good or bad to the system cooling? Answered

I think that if the channeling is done with a porr thermal-conductive material (i.e. plastic), I can get the hot air out of the case whitout having it mixed with the cold air coming from the outside. Besides, the PSU would still have its cooler running, providing more cool air from the outside and (i hope) preventing the cpu cooler from being overcharged.

Question by vinacarv 9 years ago  |  last reply 9 years ago