Ok thanks On Wed, 3 May 2023 at 1:31 am, gregebert <gregeb...@hotmail.com> wrote:
> Next time I find a hopelessly stubborn item to solder, I'm going to get my > version of "The Holy Hand Grenade of Antioch" -- acid-core solder. > I've always wanted to know if the corrosive flux can be safely and > adequately removed, and possibly over-coated with rosin-based solder. > > I rarely use this stuff; in the past it's always been for steel parts but > that ended when I got an oxyacetylene torch and now I just braze those > items. > > > [image: Image result for holy hand grenade picture] > > On Tuesday, May 2, 2023 at 6:59:19 AM UTC-7 padlernped...@gmail.com wrote: > >> Ditto on the stranded copper wire. One of the most frustrating things and >> almost impossible to clean the strands well enough for the solder to wet >> and make a reliable connection. >> >> Randy >> > >> On May 1, 2023, at 4:58 PM, gregebert <greg...@hotmail.com> wrote: >> >> Usually when I cant solder something it's because there is too much >> surface oxidation. Some of it gets so bad that rosin-based flux wont >> dissolve it, so the next step is to scrape it off with sandpaper, or a >> dremel tool. >> >> >> So far, the worst I've encountered are >> >> - Oxidized copper leads on bulk neon bulbs from China >> - Lugs on very old switches, pots, and lamp sockets that were not >> previously soldered >> - Really old resistors that were never used.....from the 1950s and >> 1960s >> - Stranded copper wire that mysteriously corroded *beneath* the >> insulation. I suspect there was a slow chemical reaction between the >> copper >> and something that outgassed from the plastic insulation. >> >> >> On Sunday, April 30, 2023 at 2:00:24 PM UTC-7 Paul Andrews wrote: >> >>> Interesting. Maybe time to break the flux out? Works for me on old >>> radios. >>> >>> On Apr 29, 2023, at 12:37 PM, Batareyka <batar...@gmail.com> wrote: >>> >>> >>> >>> >>> mth-90 used solder with a high lead content. Therefore, for a long time >>> of non-use, the balls on the legs of the solder oxidize and form a rather >>> large film of oxide that prevents the metal itself from melting. >>> To do this, you need to remove the plaque to a shiny with anything, a >>> file or a knife. >>> And after that, everything is soldered quite easily. >>> суббота, 29 апреля 2023 г. в 19:31:58 UTC+3, Jasper nagle: >>> >>>> Maybe I have another go at the blobs tomorrow on a few different tubes >>>> I’ll see if age makes a difference >>>> >>>> On Sun, 30 Apr 2023 at 12:23 am, Yohan Park <w...@kitsunegari.net> >>>> wrote: >>>> >>>>> Just tried with my iron set to the highest temperature (480C/896F), >>>>> added lead based solder to try to make it going but nothing happened. >>>>> So either you're soldering at insanely high temperatures or they've >>>>> used different materials over the years... :) >>>>> >>>>> On Saturday, April 29, 2023 at 2:01:11 PM UTC+2 Jasper nagle wrote: >>>>> >>>>>> I was able to melt the blobs on the mtx-90 with a soldering iron so >>>>>> it must be something like tin or lead >>>>>> >>>>>> On Sat, 29 Apr 2023 at 7:56 pm, Yohan Park <w...@kitsunegari.net> >>>>>> wrote: >>>>>> >>>>>>> No that's not true. It's not solder but a different metal (can't >>>>>>> recall what it is) to make it easy to solder. You won't be able to melt >>>>>>> the >>>>>>> blobs with your soldering iron though. >>>>>>> >>>>>>> On Friday, March 24, 2023 at 1:10:31 PM UTC+1 Paul Andrews wrote: >>>>>>> >>>>>>>> I had read that the little balls on the ends of the leads are >>>>>>>> solder. Is that not true? >>>>>>>> >>>>>>>> On Friday, March 24, 2023 at 7:17:05 AM UTC-4 Jasper nagle wrote: >>>>>>>> >>>>>>>>> thanks for that >>>>>>>>> >>>>>>>>> On Fri, Mar 24, 2023 at 7:01 PM Batareyka <batar...@gmail.com> >>>>>>>>> wrote: >>>>>>>>> >>>>>>>>>> H3PO4 >>>>>>>>>> or >>>>>>>>>> H3PO4 + HCl (10:1) >>>>>>>>>> >>>>>>>>>> пятница, 24 марта 2023 г. в 12:33:31 UTC+2, Jasper nagle: >>>>>>>>>> >>>>>>>>>>> tubes im having no luck putting tin to them i even managed to >>>>>>>>>>> tin the painted surface i was working on in the process >>>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> You received this message because you are subscribed to a topic >>>>>>>>>> in the Google Groups "neonixie-l" group. >>>>>>>>>> To unsubscribe from this topic, visit >>>>>>>>>> https://groups.google.com/d/topic/neonixie-l/nDLLgyjpV_I/unsubscribe >>>>>>>>>> . >>>>>>>>>> To unsubscribe from this group and all its topics, send an email >>>>>>>>>> to neonixie-l+...@googlegroups.com. >>>>>>>>>> To view this discussion on the web, visit >>>>>>>>>> https://groups.google.com/d/msgid/neonixie-l/f43249af-46d4-45a3-8dcc-275f0e4ad43en%40googlegroups.com >>>>>>>>>> <https://groups.google.com/d/msgid/neonixie-l/f43249af-46d4-45a3-8dcc-275f0e4ad43en%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>>>>>> . >>>>>>>>>> >>>>>>>>> -- >>>>>>> You received this message because you are subscribed to a topic in >>>>>>> the Google Groups "neonixie-l" group. >>>>>>> To unsubscribe from this topic, visit >>>>>>> https://groups.google.com/d/topic/neonixie-l/nDLLgyjpV_I/unsubscribe >>>>>>> . >>>>>>> To unsubscribe from this group and all its topics, send an email to >>>>>>> neonixie-l+...@googlegroups.com. >>>>>>> >>>>>> To view this discussion on the web, visit >>>>>>> https://groups.google.com/d/msgid/neonixie-l/2787a2fd-4b5f-4a8e-aefd-cf26604798ffn%40googlegroups.com >>>>>>> <https://groups.google.com/d/msgid/neonixie-l/2787a2fd-4b5f-4a8e-aefd-cf26604798ffn%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>>> . >>>>>>> >>>>>> -- >>>>> >>>> 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 neonixie-l+...@googlegroups.com. >>>>> To view this discussion on the web, visit >>>>> https://groups.google.com/d/msgid/neonixie-l/43ffeafb-05f8-435b-8960-d70278d3746en%40googlegroups.com >>>>> <https://groups.google.com/d/msgid/neonixie-l/43ffeafb-05f8-435b-8960-d70278d3746en%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>> . >>>>> >>>> -- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "neonixie-l" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/neonixie-l/nDLLgyjpV_I/unsubscribe. >>> To unsubscribe from this group and all its topics, send an email to >>> neonixie-l+...@googlegroups.com. >>> >>> To view this discussion on the web, visit >>> https://groups.google.com/d/msgid/neonixie-l/d0826c80-f5d1-429f-885a-b8c54cbd55b9n%40googlegroups.com >>> <https://groups.google.com/d/msgid/neonixie-l/d0826c80-f5d1-429f-885a-b8c54cbd55b9n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >>> -- >> 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 neonixie-l+...@googlegroups.com. >> >> To view this discussion on the web, visit >> https://groups.google.com/d/msgid/neonixie-l/c9f75756-bfa4-4835-8081-f661aacfa45an%40googlegroups.com >> <https://groups.google.com/d/msgid/neonixie-l/c9f75756-bfa4-4835-8081-f661aacfa45an%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> -- > 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 neonixie-l+unsubscr...@googlegroups.com. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/3e925d60-f266-4b0b-8d5f-f770b31491fbn%40googlegroups.com > <https://groups.google.com/d/msgid/neonixie-l/3e925d60-f266-4b0b-8d5f-f770b31491fbn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. 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