Worlds Biggest Smoke Bomb

Have you ever wondered just how big the worlds biggest smoke bomb would be or how it could be constructed? We built a 15-pound smoke bomb to apply for the Guinness World Record for Worlds Biggest Smoke Bomb. Heres how the worlds biggest smoke bomb was made. Why explain how to do it? Well, one of the requirements for a Guinness World Record is that it be breakable. Im hoping explaining how it was done will inspire you to make your own smoke bomb and experiment with the possibilities. Its what science and invention are all about! In addition to this written description, theres also a video, showing the final result. Smoke Bomb Recipe There are several ways to produce smoke, but for a device to be a smoke bomb, it needs to produce a lot of smoke. Dry ice and liquid nitrogen produce fog, but thats something different from smoke. If you want real smoke, you can prepare a powdered smoke mixture or make a solid smoke bomb. To make the worlds biggest smoke bomb, we went with the traditional saltpeter and sugar mixture. You can get smoke at different ratios of ingredients. We made the smoke bomb using: 3 parts saltpeter or potassium nitrate (Spectracide Stump Remover)2 parts sucrose (granulated white sugar) Its possible to make a smoke bomb by dampening these ingredients, mixing them and allowing the formula to dry, but that can take a really long time, plus it doesnt burn as well as the cooked mixture. We cooked the smoke bomb in relatively small batches on a kitchen stove, pouring each batch into a large cardboard mortar. Preparing the Smoke Bomb This smoke bomb formula also is used for model rockets because it produces a lot of pressure as gases are released during combustion. This is great for a rocket, but not desirable for a smoke bomb, so the design needed to prevent the smoke bomb from launching itself. To accomplish this, holes were drilled into the cardboard mortar so gases would escape in all directions. The completed smoke bomb was placed in a hole and lit from the top so that it would push down into the ground. Lessons Learned The design of the smoke bomb worked exactly as planned, but it would have been better if the smoke bomb had burned a little more slowly and with less flame. How can this be achieved? There are two easy fixes. One solution would be to change the ratio of potassium nitrate to sugar. A 1:1 ratio is harder to light, but burns more slowly and produces more smoke. Another solution is to add a small amount of sodium bicarbonate (baking soda) to the mixture to moderate the rate of the reaction. For example, if we do this, a typical amount is 1 teaspoon of sodium bicarbonate per 60 grams potassium nitrate and 40 grams sugar. Safety Notes   If you want to make a smoke bomb of your own or potentially break this record, its best to start small. First, make sure its legal to make and light smoke bombs where you live. Since they dont explode, smoke bombs are legal in many places that disallow other fireworks, but its best to know the law before you get started. Also, use common sense. Dont light smoke bombs anywhere you cant manage a fire, should one start. Smoke bombs should only be made and lit under adult supervision. Start out with the non-cook smoke bomb and then try some of my other recipes. Feel free to write me if you have any questions. Have fun! Disclaimer: Please be advised that the content provided by our website is for EDUCATIONAL PURPOSES ONLY. Fireworks and the chemicals contained within them are dangerous and should always be handled with care and used with common sense. By using this website you acknowledge that ThoughtCo., its parent About, Inc. (a/k/a Dotdash), and IAC/InterActive Corp. shall have no liability for any damages, injuries, or other legal matters caused by your use of fireworks or the knowledge or application of the information on this website. The providers of this content specifically do not condone using fireworks for disruptive, unsafe, illegal, or destructive purposes. You are responsible for following all applicable laws before using or applying the information provided on this website.