I work as a repair technician for Motorola, Inc., in the cellular phone division. The printed circuit boards are surface mount boards. To remove components, we use a 600-watt heat gun designed to strip linoleum off floors. Its nose is a metal piece about four inches long. One morning, my bench partner used the heat gun and placed it (still hot) on my bench while I was concentrating on tracing a signal on the circuit board before me. It toppled over and landed squarely on the top of my right hand.