On Aug 4, 0:25, Tony Duell wrote: They don't use corks -- they use pre-bored rubber bungs. However, the easiest and safest way to put a thermometer into a bung is to insert a borer first, slide the thermometer down the borer, and remove the borer leaving the thermometer in place. One of the first things I was taught on the lab techs course years ago (the second thing was how to deal with a kid who has a thermometer impaled in the hand). -- Pete Peter Turnbull Dept. of Computer Science University of York