If you're going to worry about it, nitrile gloves. Wes N7WS On 6/16/2020 4:02 PM, AB1DD wrote: > Hi All, > > Question on cleaning a K3, specifically during Field Day. We need to clean the > K3 before a change of operators. What is safe, IE not take off the button > labels? Alcohol? We will take the rubber ring off the tuning nob. > > What's good? >