I supervised a Metrology lab at a commercial nuclear power plant for 34 years. We also performed component level repair to “safety related” equipment. We used isopropanol applied with a stiff “acid” brush (cut the bristles short). Never had a problem with NRC audits. That being said, if you ever work on a board that is humidity sealed (plastic type coating on solder side), be very careful as the alcohol will loosen the coating and it will do a number on unsealed potentiometers and switches!
Harlan K4HES Sent from my iPhone > On Dec 31, 2021, at 4:38 PM, Dr. William J. Schmidt <b...@wjschmidt.com> > wrote: > > Professionals use 91% Isopropanol. You can get it at CVS cheap. > > > Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ > VP2EHZ > > > > -----Original Message----- > From: elecraft-boun...@mailman.qth.net <elecraft-boun...@mailman.qth.net> On > Behalf Of eda...@aya.yale.edu > Sent: Friday, December 31, 2021 2:53 PM > To: elecraft@mailman.qth.net > Subject: [POSSIBLE SPAM] [Elecraft] Cleaning Solder Flux, Redux > > > > Is there a consensus among builders of the traditional kits (K1, K2, etc) > about the best way to remove solder flux from a completed circuit board? > Some Internet sites recommend acetone, others say isopropyl alcohol. A few > tout their own product without saying exactly what it is. I remember > reading someplace that one or the other of those will clean the flux but > could also cause damage by being absorbed into components. Yes, I know this > is all purely cosmetic but if it can be done safely I'd like to try it on > the next kit. Suggestions? > > > > Thanks, > > > > Ted, KN1CBR > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message > delivered to b...@wjschmidt.com > > > -- > This email has been checked for viruses by AVG. > https://www.avg.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to hsherr...@reagan.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
