[Elecraft] K2

[Don Wilhelm]

That "rule" still applies - if less than 2 seconds, reduce the iron 
temperature, if longer than 3 seconds, increase it.
A lot will depend on the size and heat mass of the soldering tip more so 
than the recovery time of the iron.  A quick recovery is fine, but is 
not the whole story.

73,
Don W3FPR

On 6/2/2016 12:43 PM, Josh Fiden wrote:
> I would respectfully disagree with this advice. It is dependent on the 
> type of iron you're using. The Hakko FX-951 behaves quite different 
> from the traditional temperature controlled stations. It has very fast 
> thermal recovery, so typical through hole pads will flow in much less 
> than 3 seconds, but not because the iron is too hot.
>
> 73,
> Josh W6XU
>
> On 6/2/2016 8:52 AM, Don Wilhelm wrote:
>> It should wick out completely onto the solder pad and the component 
>> lead in 2 to 3 seconds.  If it takes longer than that the iron is too 
>> cold, if shorter, the iron is too hot.
>