16 years old. I wanted to burn a large, simple design onto a sheet of plywood. But how to do it, quickly and easily?
Well … my dad was a muzzle-loading rifle enthusiast, so had a good quantity of black powder on hand. Bingo! So I “requisitioned” a quantity of the powder and carefully poured it onto the plywood in the design I wanted. Note: I had enough experience with black powder that I knew it would simply burn (albeit quickly), not explode, in the open air, being “unconfined” and all that.
But how to safely light it off?
Well … when my grandfather died, my dad “inherited” his supply of blasting caps and dynamite fuse (Grandpa owned a small logging company). So I cut myself a short (6-inch) length of the fuse, and used a cigarette lighter to light one end. The idea was that I could hold the burning fuse at arms-length and touch it to the black powder. Unfortunately, my incomplete understanding of how dynamite fuse burns was my undoing. You see, it doesn’t burn like it does in the old cartoons, that is, a nice steady rate ssssssssssssssssssssssssssssss until it reaches the other end. No, it spits and sparks rather randomly, it turns out. And it spit sparks at exactly the wrong moment, just before I’d gotten myself into the desired position. Specifically, when I had my face directly above the lines of black powder.
WHOOOOOF!!
Fortunately for me, I was standing, not kneeling, when the stuff went off, so my face was far enough away to only catch the edge of the flame, and I closed my eyes in time. And it was an instantaneous thing - it went “WHOOOOOF” and that was it. Still, it was enough to singe off my eyelashes and my sorry, 16YO excuse for a mustache, and I had to get a haircut afterward. But my facial burns were no worse than a mild sunburn.
IOW, it was more embarrassing than anything. I didn’t receive any punishment beyond what I’d inflicted on myself - my dad correctly decided that I’d already learned my lesson 