Because nail polish is a thin porous coating with no strength per se. Would you trust it to seal a leak in a tire or a crack in a drinking glass?
If a tube is going to outgas around the glass/pin interface, no coating or other treatment is going to prevent that leakage. The seal is either good for the life of the tube, or if it's not, it's either a faulty seal from the factory or it has been compromised by mechanical or thermal damage. On Tuesday, January 17, 2023 at 10:00:14 AM UTC-6 Paul Andrews wrote: > Why? > > On Friday, January 13, 2023 at 5:44:42 PM UTC-5 Terry S wrote: > >> I seriously doubt nail polish will prevent gas leaks at the pins. >> >> On Thursday, January 12, 2023 at 8:39:40 AM UTC-6 Paul Andrews wrote: >> >>> I've had one IN-18 (out of 6) outgas like this, and I've seen multiple >>> reports of the same. Now I apply clear nail varnish to the joint between >>> the glass and the pin. I'm sure it depends how you socket them. >>> >>> On Wednesday, January 11, 2023 at 5:07:00 PM UTC-5 gregebert wrote: >>> >>>> It's always sad when a nixie tube dies. How long was it running ? >>>> >>>> The only Soviet-era nixies I'm using are IN-18, and they are >>>> exceptionally good tubes. Consider those for a future project. I have not >>>> had any fail yet; my 14-tube clock has been running since 2015. >>>> >>>> On Tuesday, January 10, 2023 at 10:02:06 AM UTC-8 overdoingism Lab. >>>> wrote: >>>> >>>>> Sad... so I need to replace it. >>>>> >>>>> But luckily, I used the original plastic sleeves to make the sockets. >>>>> (use DIP IC socket pin) >>>>> >>>>> I just need to replace the tube. ;-) >>>>> >>>>> Thanks for everyone's explanation. >>>>> >>>>> overdoingism Lab. 在 2023年1月10日 星期二晚上7:10:23 [UTC+8] 的信中寫道： >>>>> >>>>>> Hello, >>>>>> >>>>>> I have a failure nixie tube on my clock, >>>>>> But its failure seems a bit peculiar... >>>>>> >>>>>> It's CCCP IN-14, no over current or voltage. >>>>>> [image: nt01.jpg] >>>>>> You can see, even the anode grid have some discoloration. >>>>>> It's not normal in cathode poisoning, right? >>>>>> >>>>>> And it's working video: >>>>>> https://youtu.be/vGzF316FRBw >>>>>> Color is leaning toward purple. >>>>>> >>>>>> Who can tell me, what happened to it , and is there any way to save >>>>>> it? >>>>>> Thanks. >>>>>> >>>>> -- 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/7a936e68-de4d-400c-a7d6-31625e459c92n%40googlegroups.com.
