[sdiy] top soldering through hole

Jason Proctor jason at redfish.net
Wed Feb 14 19:29:10 CET 2018


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> 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
>>>
>>> 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>> 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>> 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>> wrote:
>>>
>>>
>>>>
>>>>         On Wed, Feb 14, 2018 at 7:25 AM, Mattias Rickardsson
>>>>         <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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>>>
>>>
>>
>>
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