In this project I show you how I made an easy colored pull ring smoke bomb. The key to this build was to make the most simple and reliable pull ring ignitor possible, and it doesn’t get much easier than two matches, an elastic band, and an off-cut of striker from the matchbox. It was also very quick and cheap.
How to make a coloured smoke bomb
I found by far the easiest, safest, and fastest way is to buy them already made. I searched the internet, eBay, and Amazon and came up with a couple of good options. In the UK I found Party Packs to be the cheapest. A simple search on their website for ‘smoke bomb’ turned up the results. On Amazon UK I found these under the phrase smoke pellet. In the USA a search on eBay for ‘smoke bomb’ or ‘smoke bomb red’, turns up something similar.
To ignite the smoke pellet and burn it faster I drilled through the middle of the colored pellet to insert a fuse, this seemed to increase the rate of burn, although in testing, a fuse running down the side of the pellet also worked well, just not quite as fast.
As it turned out some of the pellets burned hotter and faster than others, although none I tested actually caught fire. To stop me burning my hands when I was foolishly holding them for the video, I encased them in cardboard and aluminum foil to act as insulation. This was the same method I used in the Pokemon build to stop the plastic being melted.
Pull ring ignitor
To make a colored smoke grenade, a good pull ring igniter was required. I searched the internet and YouTube for inspiration, but couldn’t find anything I liked. They were either too complicated, too expensive, or unreliable. In the end I came up with the simple design you see in the video, great for small simple safe smoke bombs.
Colored smoke grenade
The make the coloured smoke grenades in the video it was just a matter of placing the assembled smoke pellet, fuse and igniter inside a container. These were just empty multivitamin bottles and vending machine balls, the hole in the top to release the smoke was about 18mm, and this was then hidden by a plastic soda cap. Finally a wire ring was added for effect or an offcut of material to form a tab.
Airsoft trip wire
I tested the exact same home made ignitor on a tripwire, no surprise it worked fine. I did though decide to tweak the design and create some raised sides. This had the added bonus of narrowing the striker even further.
The above project is aimed at adults for education and entertainment purposes only, not to replicate, ever.