Homebrew PCBs

Stefan Trethan wrote:

>Nah, doesn't fit.
>
>If i heat with hot air from above the powdery stuff must be hotter than  
>the board.
>
>ST
>
>  
>


  Maybe simpler than what I was thinking anyway.  When wiping, you are 
taking off the flux and oxides, when it just starts to reflow you are 
leaving them on.

  Try some test cases and go hotter.  Haven't used this paste, but I 
think just in general reflow goes like this, then at a higher temp it 
goes shiny on its own.  Maybe you're still not hot enough for full 
reflow..  Could be something just a little different with the paste 
though, plumbers typically do things a bit differently than how a no 
touch reflow goes..  Unless you wipe them with a rag, pipe joints are 
often dull right after making them.

  Divide and conquer, can't take more than 100 tests to figure it out 
exactly!  :)

Alan