@gunrunnerjohn posted:I also recommend 63/37 tin/lead solder, it has a eutectic property where it goes directly from a liquid state to a solid state at one temperature. The 60/40 is easier to a cold solder joint if it moves during the transition from liquid to solid.
I find that that thickness of the solder wire is also a variable - do you always use one particular thickness of solder wire or vary depending on the job ?