Richard Casady wrote:


A garbage bag of the stuff is plenty loud. Wear hearing protection,
and enjoy feeling the concussion all over your body. Adjust to what
they call a neutral flame, and then put the torch out by dipping it in
sand. It will burn under water, although lighting it there is tricky.

An ex co-worker who grew up on a chicken farm in rural
Pennsylvania told of doing exactly that. He claimed that a
large garbage bag of optimally mixed oxy-acetylene set off
remotely with a flash cube (remember those) took out windows
in his house from back by the barn. Neighbors from miles
around called to check if they were ok...

His dad later caught him ordering a weather balloon from
Edmund Scientific.