RE: [neonixie-l] Re: Making Nixie Tubes
What is the 'ceramic paint', visible in many Russian nixies, deketrons and vfd tubes? May be this ia an good alternative for home-made tubes! eric -Original Message- From: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] On Behalf Of A.J. Franzman Sent: donderdag 2 juni 2011 1:45 To: neonixie-l Subject: [neonixie-l] Re: Making Nixie Tubes On Jun 1, 2:07 pm, John Rehwinkel wrote: > > Does anyone know what the insulation material used between the > > cathodes is? It looks like it might be a tiny ceramic bead, but now > > we're wondering if it is really mica. > > Depends on the nixie. I've seen ceramic, mica, and glass. Any would work, I imagine. > > I got a quote for tiny ceramic rings for this purpose, but it was too > expensive for me. Perhaps glass seed beads would work (I've used these to make crackle neon tubing, and they worked fine). > You'd have to make your support rods thin enough to fit through the beads, naturally. One thing you usually can't see without disassembling a nixie, is that most of them have a section of tiny glass tubing that's fit over each metal support post, before the cathodes and ceramic spacers are threaded on. A.J. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
Re: [neonixie-l] Re: Making Nixie Tubes
It's called Glass Frit, or Frit glass. http://en.wikipedia.org/wiki/Frit // Per. On 13/06/2011, at 23.34, Tidak Ada wrote: > What is the 'ceramic paint', visible in many Russian nixies, deketrons and > vfd tubes? > May be this ia an good alternative for home-made tubes! > > eric -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
Re: [neonixie-l] Re: Making Nixie Tubes
>> What is the 'ceramic paint', visible in many Russian nixies, deketrons and >> vfd tubes? >> May be this ia an good alternative for home-made tubes! > It's called Glass Frit, or Frit glass. I don't think that's the same thing. Frit glass is used to seal incompatible or delicate glasses together by sintering (like the end mirrors in "soft seal" HeNe tubes). I suspect Eric is asking about the white paint on the internal leads and structures of nixies, presumably to discourage a discharge between the leads, so it will be confined to the desired location on the cathodes. I wouldn't be surprised if it's similar to the powdered alumina suspension that vacuum tube heaters are dipped in to insulate them from the cathodes. It's a similar color, it's known to be an insulator, and it doesn't spoil a vacuum. According to this page: http://www.thevalvepage.com/valvetek/heater/heater.htm "This suspension is composed of a very pure, fused and milled alumina, in a solution of methanol, aluminium nitrate salt, and distilled water." - John KG4L -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
