[Elecraft] Source of poor solder joints?

[Don Wilhelm]

Ben,

Good eyes - keep looking at your soldering that way.
The bubbling is the result of flux trapped inside the solder boiling.  It is
also an indication that your soldering temperature is a bit too low - the
joint definitely did not receive adequate heating.
Yes, such behavior will result in a bad solder connection.

73,
Don W3FPR

> -----Original Message-----
>
> I'm currently building a KPA100, and have noticed on several
> joints after I apply the solder, and then remove the iron, the
> solder bubbles around the lead, and then usually the solder joint
> looks bad.  What is happening here?  I don't recall this
> happening when I was building the base K2, but it's been quite a while.
>
> -Ben  K1NT
>