Thanks for the advice. I'll try both Kester 331, and alcohol and water with regular solder.
On Tuesday, March 8, 2016 at 11:29:53 AM UTC-5, Pramanicin wrote: > > I've had success with washing boards with isopropyl alcohol then washing > with water and drying. I use regular solder, nothing out of the > ordinary...takes a few scrubs with IPA and the boards look clean afterwards. > > On Tue, Mar 8, 2016 at 8:05 AM, David Forbes <[email protected] > <javascript:>> wrote: > >> Mitch, >> >> PC board assembly factories don't use rosin flux these days, because it >> can't be cleaned without dangerous chemicals. My city is still remediating >> the ground water after the solvent trichloroethylene (TCE) got into it from >> the local missile factory and poisoned a bunch of people in the eighties. >> >> I've been using water-soluble flux for 30 years. I use Kester 2331 >> organic liquid flux with Kester 331 organic core solder. It's rather >> active, so you have to wash it off within a day or the board gets corroded. >> I wash the boards under hot running water while scrubbing with a >> toothbrush, then remove the water with compressed air. >> >> Another benefit of this flux is that it has super wetting action, which >> makes it easy to solder 0.5mm pitch TQFP packages with a standard soldering >> iron. I can even solder 0.4mm pitch parts. >> >> There is also 'no-clean' flux, which leaves less residue than standard >> rosin core solder. That's what is used in many factories where low cost is >> king, such as consumer audio electronics. It's not show quality, though. >> The Kester organic flux makes clean, shiny solder joints. >> >> >> On 3/8/16 5:55 AM, Mitch wrote: >> >>> I can't seem to get my boards as clean as they could be. I spray with a >>> pc >>> board cleaner, then wipe and let it dry, and deal with the residue. I >>> never >>> thought about washing with water. I'll give it a try. Thanks. >>> >> >> -- >> David Forbes, Tucson AZ >> >> -- >> You received this message because you are subscribed to the Google Groups >> "neonixie-l" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To post to this group, send an email to [email protected] >> <javascript:>. >> To view this discussion on the web, visit >> https://groups.google.com/d/msgid/neonixie-l/56DEF85A.3030406%40dakotacom.net >> . >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/832c2205-23f2-467b-88ae-b61913bd9199%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
