Fred, I use a Heathkit GH-17A soldering station for all my kit building needs. It is equipped with the GE 6A217 V6 JK element (tip) and does a wonderful job building Elecraft kits, even for the KSB2 SSB adapter board, which has many very close spaced solder lands. I Use the "medium" heat setting for soldering most lands and the "high" setting for the "ground" lands. 73, Bob Abell VE3XM