Should i start making IN-1 sockets?

[kitehman]

So ive seen that IN-1 sockets are unobtainum and am thinking about starting a small scale production

the body would be LE phenolic with molex pins, solder, crimp, or through hole termination

whats do you think the interest would be?

is anyone here looking for some? 

whats the more important factor, feature or price?

[gregebert]

Very easy to do with a 3D printer; I've made socket bases for A-101 dekatrons for a future project, as well as pin-collars for IN-18's and b7971's. It takes a few test-prints to get the right dimensions; once you get that figured-out it's only a few cents per socket for the material (I use PLA).

My experience with IN-1's is that they are not reliable, which may explain why they are rather inexpensive. Great for experimenting, though.

I'd expect the cost of the socket will be more than the tube; I think the AMP connector contacts I use cost about 10 cents each.

[M W]

If you plan to just make a few sockets using a 3d printer, that works great; If you plan to go into production, though, I'll suggest you get the prototype 3d printed, but then once it's "just right", find a local small scale injection molding house & get them to produce the run for you, since 3d printers take some time to print things in large quantities. A run of 10,000 sockets would take quite a while to print :)

  Mark

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From: gregebert <greg...@hotmail.com>
To: neonixie-l <neoni...@googlegroups.com>
Sent: Thursday, December 15, 2016 10:52 PM
Subject: [neonixie-l] Re: Should i start making IN-1 sockets?

Very easy to do with a 3D printer; I've made socket bases for A-101 dekatrons for a future project, as well as pin-collars for IN-18's and b7971's. It takes a few test-prints to get the right dimensions; once you get that figured-out it's only a few cents per socket for the material (I use PLA).

My experience with IN-1's is that they are not reliable, which may explain why they are rather inexpensive. Great for experimenting, though.

I'd expect the cost of the socket will be more than the tube; I think the AMP connector contacts I use cost about 10 cents each.

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[Tidak Ada]

Would it be also possible to make EZ10 sockets? I have useable pins in stock also a technical drawing and sizes are available.

 

eric

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[kitehman]

i dont see why not especially with the technical drawings, my plan is to take 12"x12" sheets of a fine linen phenolic, drill all the holes then use a hole saw to cut each socket out,

then clean up the cut edge and fix the pins in place (super glue, maybe a second thin phenolic plate on the bottom just big enough for the through hole pin to keep them from pushing through. its a simple design thats pretty much just a support for the pins in a pcb so they cant get bent over (and phenolic looks like the time era to me)

i could make them larger and square so you can have a mounting hole/stand off in each corner but thats going to make it a little spendier in labor/materials

send me the drawings and maybe a sketch or two of how you would like a socket to look (simple is better)

[Tidak Ada]

Great! It’s the possibiliity of CNC milling and drilling I am missing here.

I shall send you the data information and other as soon as possible.  If I can get your address, I will send also some examples of usable bushings.

Further I will warn you not to fix the bushings! 13 pins have such narrow tolerances that there will be soon stress to the glass sealings. For the EZ10 is partly filled with hydrogen, what easily escapes.

Best is to drill the holes in the thick fenolic a little bigger and cover at both sides with thin fenolic to keep the bushings in place. That what’s done too in early fenolic tube sockets.

 

Best wishes for a nice X-Mas,

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[Tidak Ada]

Hi,

 

Here are the bushings I have.

 

I think the upper right one is most suitable. The rim is intended to fix it. That means you drill a little bit wider hole in the main body, then a thin layer of fenolic in a middle layer with a hole, that’s the same diameter as the rim an in a bottom layer again a fraction wider than the gold colored end.

 

Further a pdf from Dieter’s site with the size of the ZB13 socket.

 

Have a nice weekend,

 

eric

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[kitehman]

I dont see an attached photo of your bushings just the PDF of the socket drawings.

Ive been looking at materials and was curious how many you (and anyone else) would want to purchase

[Tidak Ada]

Hi,

 

Strange You did not get the Photo.

 

Her an new trial to sen it:

 

 

 

 

Van: 'kitehman' via neonixie-l [mailto:neoni...@googlegroups.com]
Verzonden: dinsdag 27 december 2016 23:47
Aan: neonixie-l
Onderwerp: Re: [neonixie-l] Should i start making IN-1 sockets?

 

I dont see an attached photo of your bushings just the PDF of the socket drawings.

 

Ive been looking at materials and was curious how many you (and anyone else) would want to purchase

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[kitehman]

photos came through great, i think i have a crimping tool for those pins and could build them with pigtails.

here is a link to the pins i was thinking of using as an alternative http://www.mouser.com/images/molex/lrg/1377large.jpg

a socket with these would be a through hole soldered in socket, although it looks like you desire free floating pins with pigtails to minimize pin stresses

[Tidak Ada]

I forgot to show this kind of real tube socket bushings. However, they use a slit hole for the soldering eye that has to be turn-bend to fix it in the insulator.  Are you able to make that?

 

Would it be possible to make the socket out of Teflon? The EZ10B runs until 1MHz and uses an anode voltage of 600V

 

Van: 'kitehman' via neonixie-l [mailto:neoni...@googlegroups.com]
Verzonden: woensdag 28 december 2016 1:44
Aan: neonixie-l
Onderwerp: Re: [neonixie-l] Should i start making IN-1 sockets?

 

photos came through great, i think i have a crimping tool for those pins and could build them with pigtails.

 

here is a link to the pins i was thinking of using as an alternative http://www.mouser.com/images/molex/lrg/1377large.jpg

 

a socket with these would be a through hole soldered in socket, although it looks like you desire free floating pins with pigtails to minimize pin stresses

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[kitehman]

Teflon stock looks about twice the price as an XXX electrical grade paper phenolic   https://www.plasticsintl.com/datasheets/Phenolic_Grade_XXX_Paper.pdf

The rating is a break down voltage across 0.062"  from 40,000V to 10,000V after a 48hour immersion in water so i think that its going to work fine (still looking for the specs on an LE phenolic)

I have no idea how i would go about slotting for the tabs on those pins, any ideas would be nice

Jadon

[Tidak Ada]

Hi Jadon,

 

Never mind, there are also those other useful bushings.

I was in the mind Teflon had a higher dielectric strength than FR4. That is important for higher frequencies. However 1 MHz is not really high.

If you want, I will look for some rest-pieces of Teflon sheet. I can find them mostly at ham fests. 4 - 5 mm thickness will be fine.

Anyhow, I will be content with phenolic (FR4). It’s already fine you can make them.

 

eric

 

Van: 'kitehman' via neonixie-l [mailto:neoni...@googlegroups.com]
Verzonden: woensdag 28 december 2016 17:36
Aan: neonixie-l
Onderwerp: Re: [neonixie-l] Should i start making IN-1 sockets?

 

Teflon stock looks about twice the price as an XXX electrical grade paper phenolic   https://www.plasticsintl.com/datasheets/Phenolic_Grade_XXX_Paper.pdf

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[kitehman]

Im not making them out of FR4 because of the glass fibers freed by machining i dont have a way to contain

the XXX paper phenolic is still really good (fr4 has a dielectric of 800V/mil and XXX paper has 700V/mil, the LE phenolic which is more structural has 650V/mil)

but if your looking at surface resistivity, yes PTFE is by far the leader. here is a table of different laminates and their data http://www.plasticsintl.com/sortable_materials.php

from what ive been reading XXX paper phenolic is fine for RF applications

[Tidak Ada]

Sorry, my typo! I meant FR-2, was confused by Wiki.

 

Thanks for your correction!

 

eric

 

Van: 'kitehman' via neonixie-l [mailto:neoni...@googlegroups.com]
Verzonden: donderdag 29 december 2016 19:41
Aan: neonixie-l
Onderwerp: Re: [neonixie-l] Should i start making IN-1 sockets?

 

Im not making them out of FR4 because of the glass fibers freed by machining i dont have a way to contain

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