[Elecraft] defluxing PCB's

Tue Apr 22 18:23:01 2003

Chris:
  Your instructor's great-great-great grandchildren will be dead before 
non-defluxed PCB's of yours cause you or him any trouble.  Forget it.

best wishes,

dave belsley, w1euy

--On Tuesday, April 22, 2003 5:00 PM -0400 Chris Waldrup 
<[email protected]> wrote:

> I remember reading in the K2 manual about how the PCB should not be
> defluxed due to problems that this can cause.  In my construction over
> the years I have not defluxed boards, since I was more concerned that the
> solvent could be hazardous to my health and the thought that since flux
> is only pine rosin it could not be that hazardous to the joints. I'm
> currently taking taking an IPC (electronics industry standard) soldering
> course for my work and today in class the instructor stressed defluxing
> boards even when the only flux used is that contained in the solder
> itself (i.e. no external liquid or paste).  He taught us the correct way
> utilizing matched chemistry between the flux type and the solvent. Do
> most people deflux their boards?  And if so, it is worth it to go back
> and deflux everything I have ever built or just go forward with the
> defluxing from this point (I would have a lot of stuff to go back and
> deflux).  I am currently using 60/40 RA solder, but plan on switching to
> 63/37 as soon as I run out of current stock.
>
> Thanks.
>
> Chris Waldrup
> KD4PBJ
>
>
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----------------------------------
David A. Belsley
Professor of Economics