[LakeCleElum]

High school metal shop. Got the mixture just right on the cutting torch, put out the flame and filled a balloon....Go outside to a fenced area between metal shop and wood shop used to store materials.

Glad I didn't hold the match in my hand. I attached it to the end of piece of a welding rod so I could stand back a bit. My friends said: The explosion knocked me down, I got up dazed, ran in a circle and then took off"......It broke some windows and knocked over a pile of plywood....Stoopid on my part....Got detention for a week as I recall.