[sdiy] top soldering through hole

MTG grant at musictechnologiesgroup.com
Wed Feb 14 19:48:20 CET 2018


Wash with what and dry how?  I've never water washed a board before.

GB

On 2/14/2018 10:29 AM, Jason Proctor wrote:
> same here -- 331 -> wash -> 44 for the rest. the boards are very clean 
> and i've never had a single problem.
> 
> 
> 
> On Wed, Feb 14, 2018 at 10:15 AM, David Moylan <dave at westphila.net 
> <mailto:dave at westphila.net>> wrote:
> 
>     I'm also using 331 water soluble for most components, then a board
>     wash.  Blame Paul Schreiber.
> 
> 
>     On 02/14/2018 09:13 AM, Ian Fritz wrote:
> 
>         I use Kester 44, never clean the flux, and boards I built 40
>         years ago are still fine.  Absorbs water? Corrodes? Somebody
>         please come over and show me, because I can't see any of that.
> 
>         Always solder from the top, too.
> 
>         Ian
> 
> 
> 
>         On 2/14/2018 8:59 AM, Quincas Moreira wrote:
> 
>             I use a local brand, Steren, 60/40
>             http://www.steren.com.mx/rollo-de-100-gramos-de-soldadura-con-aleacion-estano-plomo-60-40.html
>             <http://www.steren.com.mx/rollo-de-100-gramos-de-soldadura-con-aleacion-estano-plomo-60-40.html>
> 
> 
>             Yeah I guess it's not no clean, just regular leaded. I just
>             never felt like enough flux got on the boards to warrant
>             cleaning. I probably should though, if it's corrosive in the
>             long run. I've only been doing this for 7 years, maybe I'll
>             find out in 20 that I should have been cleaning all along!
> 
>             What should I use to clean then?
> 
>             Thanks Pete
> 
> 
> 
> 
>             On Wed, Feb 14, 2018 at 8:59 AM, Pete Hartman
>             <pete.hartman at gmail.com <mailto:pete.hartman at gmail.com>
>             <mailto:pete.hartman at gmail.com
>             <mailto:pete.hartman at gmail.com>>> wrote:
> 
>                  What type of solder are you using?  Brand and model?
> 
>                  I use Kester 331 water soluble flux solder for early
>             components
>                  (stuff that can get wet), and it comes off the board
>             entirely with a
>                  brush (nylon bristles, like a really big toothbrush)
>             and warm/hot
>                  water.  Thing about it is, if I were using it on the
>             top and it were
>                  getting under components it would take more like an
>             ultrasonic bath
>                  to clean and get flux out from under resistors and
>             things, and if
>                  you don't clean it, the stuff is corrosive in the
>             longer run.
> 
>                  I finish up for things that can't get wet (pots etc)
>             with Kester 245
>                  no-clean.  It does leave some residue, but the main
>             point is that
>                  it's not meant to be cleaned off normally, and it
>             doesn't leave
>                  enough to look like some of the messes I've seen.  I
>             also use it for
>                  any top solder touch ups.
> 
>                  I've seen some really nasty work come across my
>             workbench for
>                  repair, stuff with 331 flux still on it after who knows
>             how long,
>                  stuff with ancient rosin flux with the black and brown
>             lava flows
>                  all over it.
> 
>                  I figure if you're not using no-clean, you'd know it :)
> 
>                  Pete
> 
> 
> 
>                  On Wed, Feb 14, 2018 at 8:15 AM, Quincas Moreira
>             <quincas at gmail.com <mailto:quincas at gmail.com>
>                  <mailto:quincas at gmail.com <mailto:quincas at gmail.com>>>
>             wrote:
> 
>                      I’ve never cleaned a board, ever... Maybe I’m using
>             no clean
>                      solder and didn’t even know it, I just never felt
>             the need. My
>                      builds look clean enough to me. Am I trippin’?
> 
>                      Sent from my iPhone
> 
>                      On Feb 14, 2018, at 07:33, Pete Hartman
>             <pete.hartman at gmail.com <mailto:pete.hartman at gmail.com>
>                      <mailto:pete.hartman at gmail.com
>             <mailto:pete.hartman at gmail.com>>> wrote:
> 
> 
> 
>                          On Wed, Feb 14, 2018 at 7:25 AM, Mattias
>                 Rickardsson
>                          <mr at analogue.org <mailto:mr at analogue.org>
>                 <mailto:mr at analogue.org <mailto:mr at analogue.org>>> wrote:
> 
>                              Top side is much simpler, I'll never go
>                 back - but
>                              probably a bit trickier to get clean from
>                 flux etc?
> 
> 
>                           I think this is the main reason I still
>                 primarily bottom
>                          solder, but I check my joints and if I have
>                 ones that didn't
>                          wick up to the top I'll touch them up with
>                 no-clean.
> 
>                          Pete
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> 
> 
> 
> 
> 
>             -- 
>             Quincas Moreira
>             Test Pilot at VBrazil Modular
> 
> 
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