+1 for the Monty Python reference.... thanks Greg! On Tue, May 2, 2023 at 10:40 AM Jasper nagle <jaspernagle2...@gmail.com> wrote:
> 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 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