While installing the thermostat for a heating installation in an grand old house, many years ago, I was drilling up from the basement with a hand brace into what I hoped was the wall stud space.
My helper was upstairs watching to make sure we did'nt damage the beautiful hardwood floor. I yelled "It should be through by now"
He answered " I can hear it, but I can't see it"
Then I saw different colored chips coming down the hole. I was drilling up into the bottom of a piano.
We never said a word to anyone. I guess they didn't move that piano for quite a while.
Another time, when I was a helper, I was watching the floor while my boss was drilling from below, and I felt a funny sensation in the bottom of my foot. The worm of the bit was into the sole of my shoe.
Ed
[This message has been edited by electric-ed (edited 10-03-2002).]