After New Years Eve in Madrid, you can find fireworks. I was walking around and I found an entire pack of unused firecrackers. I was thinking about what to do, and in the end I decided to make a sort of rocket launcher.
How I built it was simple, the firecrackers had a fuse, so I needed a way to light it and a barrel to put the rocket in. For the ignition I used an arc lighter, which creates a small electric arc that can light things on fire.
For the rest of the project, I designed the pieces with tinkercad. Later, I printed them out with my Prusa 3d printer. I connected all the pieces to some wood with glue and zip ties. I protected the electronics with some electric tape.
The result was pretty cool, here you can see how it works.
The force of the rocket was strong enough to impale it in the wall.
| PARTS USED | TIME REQUIRED | ESTIMATED COST |
| -Arc lighter -3d printed parts -Firecrackers -Electric tape | -1 hour designing -2 hours 3d printing -1 hour assembly -1 hour testing TOTAL: 5 hours | -Arc lighter: $15 -3d filament: $2 -Firecrackers: $? TOTAL: $17 |