Putting On a Show with Festival Balls Artillery Shells
If you've ever spent a Fourth of July leaning over a launch tube with a long lighter in hand, you've definitely handled a festival balls artillery shell. These things are basically the bread and butter of backyard firework displays. They aren't the massive, professional-grade mortars you see at city-sponsored events, but for something you can legally set off in your driveway, they pack a serious punch. There's just something incredibly satisfying about that thump as the shell leaves the tube, followed by a few seconds of anticipation before the sky lights up. ...