[Elecraft] Soldering speed and temperature

[Ron D'Eau Claire]

That's an interesting document Josh. It summarizes, "Solder connection
temperature, not soldering iron tip temperature, should be the parameter we
focus on to ensure reliable solder joints." 

That's why the proper tip geometry and a small amount of solder to conduct
the heat efficiently is so important for consistent, properly soldered
joints. 

Still, a certain amount of time is required for the solder and surfaces to
reach the proper temperature and allow the solder to flow as the document
explains.

I believe that's what Don is referring to with his 2 s or 3 s soldering time
range for the typical components and solder sizes we are using on the
Elecraft and similar gear. That interval is what is required by the thermal
mass of the parts more than by a droop in the iron temperature. 

I've always found it a good "rule of thumb". 

I submit it is still valid even with a new technology iron such as described
in the document. The difference is that the newer more sensitive temperature
controls require little or no adjustment of their heat setting when changing
from one size solder joint to another (within limits) or when soldering a
great many joints in rapid succession. 

73, Ron AC7AC