I've been told that it is possible to buy pre-manufactured bases with the evacuation tube at the bottom between the pins just like on the B7971 tubes so that would definitely be something to check out.
/Martin On Wednesday, 1 January 2025 at 07:53:54 UTC+1 Leroy Jones wrote: > inixielab.com sorry for the bogus url in the last post > > On Wednesday, January 1, 2025 at 1:51:12 AM UTC-5 Leroy Jones wrote: > >> The Chinese fellow who is making the DGM01 tube at inixie.com is making >> them with glass seals directly on the pins. So it is not lost to the >> sands of time. >> Those that are making pinch seals with lead wires soldered to a glued-on >> base, that is fine but it comes with a caveat. Glue always has a way of >> letting go of the glass eventually. >> Not always but often enough to make me question it. For the B8971 >> tubes, why not go with the glass seals directly on the pins? Especially >> since there is already this gentleman >> in China who is already producing nixie tubes made this way? I guess I >> just have my preferences. Please do not shoot the messenger... >> >> On Tuesday, December 31, 2024 at 11:03:40 PM UTC-5 Oskar wrote: >> >>> There were also "real" Nixie tubes that used pinch seals. Please keep >>> in mind that Nixie tube manufacturers today work at a much smaller scale >>> and with much smaller budgets than the tube industry did in its hayday. >>> It's a lot more difficult to establish a reliable method for sealing >>> pins directly against the glass if you don't have hundreds of engineers >>> with years of experience in glasswork and material science working on the >>> process. Especially if you are offering ten years of warranty on every >>> single tube sold like Dalibor Farny does. I don't think it's wrong to >>> prefer proper pin-to-glass seals, but I feel like the way you worded >>> your reply is quite dismissive of the considerable efforts manufacturers >>> have put into developing new tubes. >>> >>> That being said, since there are still tubes being produced with this >>> kind of seal, I don't think the method has been lost to time entirely. It's >>> probably more that the manufacturers that still know the process wouldn't >>> be willing to share the details with a small Nixie tube manufacturer. >>> >>> Leroy Jones schrieb am Mittwoch, 1. Januar 2025 um 04:15:32 UTC+1: >>> >>>> One thing that bothers/worries me about all of these modern-day nixie >>>> tubes is the fact that the base is GLUED on to the envelope. >>>> Over the years I have seen plenty of older tubes (not nixies) that had >>>> glued bases and the base always eventually comes loose. >>>> I have had several old Western Electric ballast lamps that had the base >>>> come loose. Luckily the lead wires stayed intact and I was able >>>> to re-glue the base to the envelope using cyanoacrylate (aka "super") >>>> glue. So I honestly think that this is what we are in for with these >>>> modern-day so-called "nixie" tubes. In other words, wait 20 or 30 >>>> years and then the base comes loose. In my humble opinion, the nixie >>>> tube makers >>>> really need to re-learn the skill of sealing good pins to the glass >>>> like they used to do. It cannot be that tough of a skill to master. >>>> After all millions upon millions of all different types of vacuum tubes >>>> were made this way. I think they are using a plain pinch with wires >>>> coming out then soldered to a fake little PC board is kind of an easy >>>> cop-out they are using to get tubes out the door fast instead of making >>>> them >>>> properly. Yes, I have a problem with these new tubes. They are not >>>> genuine. >>>> >>>> On Tuesday, December 31, 2024 at 9:25:45 AM UTC-5 Adam Piórko wrote: >>>> >>>>> The option of an MCU on the PCB is not a bad idea. I dream of a PCB >>>>> with control via I2C bus or shift registers. The only problem is that the >>>>> B8971 is about the size of an IN-18, and I doubt there would be space for >>>>> anything other than traces to the pins :) >>>>> >>>>> Most likely, the board will have a hole through which the leads from >>>>> the tube will pass and need to be soldered to the PCB – and that takes up >>>>> space... >>>>> >>>>> >>>>> wtorek, 31 grudnia 2024 o 11:29:16 UTC+1 newxito napisał(a): >>>>> >>>>>> I’m still interested, I have no problem with the small PCB approach. >>>>>> They could add a 50 cents MCU to the PCB for storing the serial >>>>>> number and counting the operating hours, of course all data accessible >>>>>> from >>>>>> my clock... just kidding... >>>>>> >>>>>> Richard Scales schrieb am Dienstag, 31. Dezember 2024 um 05:18:14 >>>>>> UTC+1: >>>>>> >>>>>>> A slight update: >>>>>>> >>>>>>> Whilst the manufacturer has made the DGM01 tube with glass sealed >>>>>>> pins at the base - the preferred approach seems to be, like other >>>>>>> manufacturers, to use the small PCB at the base. >>>>>>> >>>>>>> This is to mitigate against leakage around the pins in the glass >>>>>>> base which whilst was once a common place manufacturing step (back when >>>>>>> tube production was massive) but now appears to be a technique that has >>>>>>> been lost in the sands of time. >>>>>>> >>>>>>> So, that is the current thought. >>>>>>> >>>>>>> The base absolutely positively has to match the existing B8971 for >>>>>>> compatibility purposes. >>>>>>> >>>>>>> A lot more research has yet to be done and I will report all >>>>>>> progress here. >>>>>>> >>>>>>> In the meantime - thank you all for your support. It is clear that >>>>>>> there is demand for such a thing - even if only in the 100's. I look >>>>>>> forward to updating you all when I know more. >>>>>>> >>>>>>> - Richard >>>>>>> >>>>>>> >>>>>>> On Monday, 30 December 2024 at 23:30:16 UTC Bill Stanley wrote: >>>>>>> >>>>>>>> Hi Richard, >>>>>>>> >>>>>>>> Add me for 6 of the tubes. >>>>>>>> >>>>>>>> -Bill- >>>>>>>> >>>>>>>> >>>>>>>> *From:* Richard Scales >>>>>>>> *Sent:* Saturday, December 28, 2024 10:34 PM >>>>>>>> *To:* neonixie-l >>>>>>>> *Subject:* [neonixie-l] B-87971 tubes >>>>>>>> >>>>>>>> Hello, >>>>>>>> I am in discussion with a tube manufacturer regarding the >>>>>>>> implementation of a B-8971 replacement tube. >>>>>>>> It seems that the idea is fully achievable though I would need to >>>>>>>> order 100 units of the first batch in order to make it happen. >>>>>>>> Naturally I am asking to see if anyone would be interested in >>>>>>>> committing to the purchase of a number of tubes to see if I can get an >>>>>>>> order for 100 units together. >>>>>>>> Please let me know if you might be interested, the target price for >>>>>>>> the first should be close to $75+whatever duties and taxes are >>>>>>>> applied. >>>>>>>> Thereafter the price could get much closer to $50+taxes etc. >>>>>>>> Just let me know. >>>>>>>> - Richard >>>>>>>> -- >>>>>>>> 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 view this discussion, visit >>>>>>>> https://groups.google.com/d/msgid/neonixie-l/35e83ab3-4d08-44c1-a52d-53d6fd5ea924n%40googlegroups.com >>>>>>>> >>>>>>>> <https://groups.google.com/d/msgid/neonixie-l/35e83ab3-4d08-44c1-a52d-53d6fd5ea924n%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 [email protected]. To view this discussion, visit https://groups.google.com/d/msgid/neonixie-l/a7afbe8c-96c2-4354-9c09-248b9bfa171cn%40googlegroups.com.
