On Sun, 3 Mar 2019, Manu Abraham wrote: > I think, if it works that's a better option, probably. Need to give it > a shot and see how it goes. Any particular flux you suggest ? > > In the solder pot, one of the issues that I came up was that, the lead > or maybe tin burns up and forms a kind of crusty film over the molten > solder. Appears to me that over time, it needs to skimmed away ? I always thought that the flux was there to "reduce" oxides which formed a= =20 barrier to "wetting". I've never used a solder pot but I would expect=20 adding a tiny amount of flux would "reduce" the crusty film back to a=20 shiny metal. Depending on the flux, if it doesn't completely burn off, you= =20 might get a "slag" formed which might need to be skimmed off the top. Regards Sergio > > Regarding the flux, is rosin a better alternative ? Have seen some > people use an acid based flux (looks slightly yellowish liquid in > color, skin except on the palm itches on contact. Smells probably like > chlorine gas liberation. When used with normal soldering, there are no > residues after soldering, but leaves a very small amount of ash > residue, in a ring form). Wonder whether it is a HCl based flux. > Wonder whether that can be used in a solder pot. > > Thanks, > > Manu > > On Sun, Mar 3, 2019 at 6:04 PM Peter wrote: >> >> Slow method but may work, would need to try on actual oxidized crystal >> legs. Dip into flux and then re-tin in solder pot? >> >> I say this because we have some switches and connectors, which get >> oxidized and the above works. >> >> Peter. >> >> ------------------------------------------------------------------------ >> >> >> On 3/03/2019 5:52 pm, Manu Abraham wrote: >>> Hi, >>> >>> I have this large bag of through-hole standard crystals, which have >>> their pins oxidized, since the bag was left open for a while and thus >>> solderability is a big issue. >>> >>> The crystals are good, just that time has to be spent scraping the >>> oxide of the pins which is a waste of time. >>> >>> Is there a better way to remove the oxide layer other than scraping, >>> probably by a chemical process or so ? >>> >>> Any thoughts ? >>> >>> Thanks, >>> Manu >> -- >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist > --=20 > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .