>When I built my K2 spring 06 - and soldered along, day
>and night after night. I always made sure to have
>my soldering tip set a high enough temperature, and
>tried as best I could to get very good solder flow
>with my Kester solder - both onto the component lead,
>and the PCB's pad and "hole".
>
>The "hole" and Elecraft's 2-sided PCB's always puzzled
>me a bit - as I was never sure if there were pads,
>plated-thru hole, and lower pads - every time. In
>other words when I soldered a component on the top
>side of the RF Board - and got a great solder flow -
>was I supposed to look to see if there was a pad
>and "great flow" on the bottom side too?
>
>OR DOES THE PLATED-THRU HOLE, TAKE CARE OF THAT?
>
>Apparently I must have figured right - none of my
>solder connections ever gave any trouble, and K2
>checked out right, after every section build!
>Probably lucky.
>
>"Solder Flow" - with lead based solder, and its tin
>content, etc. - reminds me of my first career in the
>newspaper field. I was one of those rare birds who
>fixed linotype hot-metal typecasting machines for 10
>years. In those days there were magic crayon-like
>sticks we threw into the metal pot, and daily skimming
>of the dross that built up on the top layer of the
>pot's liquid lead/tin/antimony metal mixture.
>Temperature was critical then, to ensure razor sharp
>newspaper type letters on the top of each ejected
>"line of type" that came out of those black beauty
>machines. I think I could still fix one of them
>in my sleep. Our daily newspaper in Buffalo, had
>49 machines - for 5 editions a day. By the by,
>linotype metal supposedly the best for casting
>pistol bullets. Extra hard.
>
>Kept a guy out of trouble .....
>
>Fred
>FL
>
>
>
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