Ahh ok, that is most likely why DGM01 guy has the exhaust nipple on the bottom in the center of his non-standard pin circle. He is probably using the pre-made bases and pins. Another puzzle piece identified.
On Wednesday, January 1, 2025 at 5:26:28 AM UTC-5 Dekatron42 wrote: > 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/e9b405df-6939-462d-9f8d-c8f1db47b2ban%40googlegroups.com.
