ohhh

When I was a kid, I used to make weapons. I made a lot of bows and arrows, I made spears, etc. I always wondered how the hell people made blow dart guns out of bamboo. Bamboo grows in cells, although it is mostly hollow, there are walls on the inside. I thought, even if you stuck a tool down the bamboo shaft, it would never make a clean straight barrel. Also, bamboo is really too wide. I learned from shooting spit balls out of straws that you need a tight fit. Darts from dart guns are always small. How do you shoot a small dart out of a big barrel with any force?

Well, like a million other questions in life, I just forgot about it and went about my business.

Today, decades later, I finally have the answer.

To make a blow dart gun from bamboo, you cut the bamboo in half, then meticulously cut a small straight grove into both sides of the bamboo halves. Then you tie the two halves together again. In this way you should have a straight, small barrel, running through the center of the bamboo shaft. Perfect for tiny darts.