Originally posted by parksie
We dripped oleum onto the bench at my last school.....it drilled a hole through the bench, through the cupboard, and through a big pile of books before reaching the floor and going about an inch further
You had oleum in your school lab? Were your teachers, suicidal?
Once in Physics when we were blowing glass, some dumb@$$ put his bit down on a cloth after it had just been in a bunsen flame. He burned down £2000 worth of computer, and a specially designed £400 work surface.