Wrong use of a YouTube tutorial by some teenagers in Indonesia (boy gets his hand destroyed after playing with firecracker)
I have to guess they didn't follow the instructions very closely. Since one is dead probably not at all.
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I had a similar problem after watching a YT video on how to make a small nuclear weapon:
I made the mistake of letting too much fissionable material get too close together, and it went critical and flashed over and kinda fried my workshop.
Now I glow at night.
- 9 Context