[neonixie-l] Re: Vacuum pumps for evacuating DIY nixies?

[gregebert]

I'm not an expert on vacuum systems, but the units I see most-commonly for 
low vacuums (such as what you would see in a typical engine or vacuum 
cleaner) are inches or mm of mercury; higher vacuums are measured in 
microns. One Torr (1mm Hg) is 1000 microns. It's a tad silly, because you 
cannot physically measure 1 micron of Hg in a manometer, though at room 
temp the vapor pressure of mercury is quite low, around 2 microns. 

I'm guessing that nixie makers will use whatever high-vacuum equipment they 
can find and afford, and from the brief video shots the setups look like 
they use high-quality (expensive) equipment. Nothing looked cheap or kludgy.

You can even use atmospheric air at low pressure to get a gas discharge.

On Friday, September 15, 2023 at 9:01:27 AM UTC-7 Miles Thatch wrote:

> >  supposedly can get down to 35 microns
> Is there a particular technical reason to not use the torr unit of 
> measurement when discussing vacuum? Just curious if it's just personal 
> choice or if there's a technical principal at play.
>
> > My plan is to do some heating/baking while the system is fully evacuated
> I have seen Dalibor do this in one of his videos. 
>
> I've also seen it in this one as well at 10:24:
> https://www.youtube.com/watch?v=uHv1f4_tDv4
>
> Also here, another nixie making gentleman: at 6:57
> https://www.youtube.com/watch?v=MyhmEUw4OL0
>
> > To do quality work, you will need another pump, typically a diffusion 
> pump, which will get you below 1 micron 
> I don't think I've yet seen any of the nixie makers talk about exactly the 
> sort of hardware they use, Just glimpses in an occasional camera shot. 
> Do you reckon it's what Dalibur and these other gents use?
>  
>
> On Friday, September 15, 2023 at 11:27:49 AM UTC-4 gregebert wrote:
>
>> I bought an A/C evacuation pump from Harbor Freight Tools that supposedly 
>> can get down to 35 microns; I dont have any equipment to measure anywhere 
>> near that low. It was a relatively inexpensive pump, around 80 USD. I think 
>> it's sufficient to do some experimenting. My plan is to do some 
>> heating/baking while the system is fully evacuated, then pressurize with 
>> enough argon (it's cheap and widely available) to get a glow. If I can 
>> sustain the glow for several minutes while heating the tube, I will pump it 
>> down a second time to hopefully get rid of any additional released 
>> contaminants, then refill. After I've made a few of these, I'll make a 
>> decision to continue spending time-and-money, or decide my experiment was 
>> enough to satisfy my curiosity and move onto something else. I'm definitely 
>> not going to build nixies. There are a few other things I want to make that 
>> require a vacuum and some glasswork, such as a radiometer.
>>
>> To do quality work, you will need another pump, typically a diffusion 
>> pump, which will get you below 1 micron and will be rather costly. The 
>> mechanical pump must first be used to pump down as much as possible, before 
>> the diffusion pump is used.
>>
>> On Thursday, September 14, 2023 at 9:24:05 PM UTC-7 Miles Thatch wrote:
>>
>>> Ok, that makes more sense. So in that case High Vacuum is required to 
>>> evacuate then. 
>>>
>>> What sort of pump would I need to be looking for to achieve that?
>>>
>>> On Thursday, September 14, 2023 at 5:41:36 PM UTC-4 gregebert wrote:
>>>
 OK, that's once the tube is pressurized with the desired gas. However, 
 to cleanse the tube of impurities, it must be baked-out and evacuated  to 
 a 
 rather high vacuum. Even at a high vacuum of 1 micron, there are still an 
 extraordinary number of gas molecules present, on the order of 10^16 per 
 liter. For home-made tubes I would actually want to re-evacuate the tube a 
 second time, and refill, to get even more impurities removed.
 On Thursday, September 14, 2023 at 10:28:06 AM UTC-7 Miles Thatch wrote:

> From he Drive books archive
> Nixe Tube Data > NixieGas.pdf
>
> I was using the following excerpt from this book. Is it wrong or am I 
> getting something mixed up?
>
> On Thursday, September 14, 2023 at 11:43:46 AM UTC-4 gregebert wrote:
>
>> I think you mean 10-50 microns (which is 1000 timer lower), not 10-50 
>> Torr. One atmosphere of pressure is 760 Torr (760mm Hg).
>> I've seen neon-sign texts stating the need to get below 1 micron for 
>> proper bombarding, and I imagine nixie tubes are similar.
>>
>> On Thursday, September 14, 2023 at 6:57:51 AM UTC-7 Nick wrote:
>>
>>> Look at Dalibor's videos.
>>>
>>> On Thursday, 14 September 2023 at 12:08:57 UTC+1 
>>> milesan...@gmail.com wrote:
>>>
 Good day.

 Since we require to reach vacuums of 10 - 50 torr depending on the 
 gas mixture. What sort of vacuum pumps are we looking at sourcing to 
 achieve those levels?

>>>

-- 
You received this message because you are 

[neonixie-l] Re: Vacuum pumps for evacuating DIY nixies?

[Miles Thatch]

>  supposedly can get down to 35 microns
Is there a particular technical reason to not use the torr unit of 
measurement when discussing vacuum? Just curious if it's just personal 
choice or if there's a technical principal at play.

> My plan is to do some heating/baking while the system is fully evacuated
I have seen Dalibor do this in one of his videos. 

I've also seen it in this one as well at 10:24:
https://www.youtube.com/watch?v=uHv1f4_tDv4

Also here, another nixie making gentleman: at 6:57
https://www.youtube.com/watch?v=MyhmEUw4OL0

> To do quality work, you will need another pump, typically a diffusion 
pump, which will get you below 1 micron 
I don't think I've yet seen any of the nixie makers talk about exactly the 
sort of hardware they use, Just glimpses in an occasional camera shot. 
Do you reckon it's what Dalibur and these other gents use?
 

On Friday, September 15, 2023 at 11:27:49 AM UTC-4 gregebert wrote:

> I bought an A/C evacuation pump from Harbor Freight Tools that supposedly 
> can get down to 35 microns; I dont have any equipment to measure anywhere 
> near that low. It was a relatively inexpensive pump, around 80 USD. I think 
> it's sufficient to do some experimenting. My plan is to do some 
> heating/baking while the system is fully evacuated, then pressurize with 
> enough argon (it's cheap and widely available) to get a glow. If I can 
> sustain the glow for several minutes while heating the tube, I will pump it 
> down a second time to hopefully get rid of any additional released 
> contaminants, then refill. After I've made a few of these, I'll make a 
> decision to continue spending time-and-money, or decide my experiment was 
> enough to satisfy my curiosity and move onto something else. I'm definitely 
> not going to build nixies. There are a few other things I want to make that 
> require a vacuum and some glasswork, such as a radiometer.
>
> To do quality work, you will need another pump, typically a diffusion 
> pump, which will get you below 1 micron and will be rather costly. The 
> mechanical pump must first be used to pump down as much as possible, before 
> the diffusion pump is used.
>
> On Thursday, September 14, 2023 at 9:24:05 PM UTC-7 Miles Thatch wrote:
>
>> Ok, that makes more sense. So in that case High Vacuum is required to 
>> evacuate then. 
>>
>> What sort of pump would I need to be looking for to achieve that?
>>
>> On Thursday, September 14, 2023 at 5:41:36 PM UTC-4 gregebert wrote:
>>
>>> OK, that's once the tube is pressurized with the desired gas. However, 
>>> to cleanse the tube of impurities, it must be baked-out and evacuated  to a 
>>> rather high vacuum. Even at a high vacuum of 1 micron, there are still an 
>>> extraordinary number of gas molecules present, on the order of 10^16 per 
>>> liter. For home-made tubes I would actually want to re-evacuate the tube a 
>>> second time, and refill, to get even more impurities removed.
>>> On Thursday, September 14, 2023 at 10:28:06 AM UTC-7 Miles Thatch wrote:
>>>
 From he Drive books archive
 Nixe Tube Data > NixieGas.pdf

 I was using the following excerpt from this book. Is it wrong or am I 
 getting something mixed up?

 On Thursday, September 14, 2023 at 11:43:46 AM UTC-4 gregebert wrote:

> I think you mean 10-50 microns (which is 1000 timer lower), not 10-50 
> Torr. One atmosphere of pressure is 760 Torr (760mm Hg).
> I've seen neon-sign texts stating the need to get below 1 micron for 
> proper bombarding, and I imagine nixie tubes are similar.
>
> On Thursday, September 14, 2023 at 6:57:51 AM UTC-7 Nick wrote:
>
>> Look at Dalibor's videos.
>>
>> On Thursday, 14 September 2023 at 12:08:57 UTC+1 milesan...@gmail.com 
>> wrote:
>>
>>> Good day.
>>>
>>> Since we require to reach vacuums of 10 - 50 torr depending on the 
>>> gas mixture. What sort of vacuum pumps are we looking at sourcing to 
>>> achieve those levels?
>>>
>>

-- 
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/dc34a229-4db3-4f38-bac0-611a6289f6aan%40googlegroups.com.

[neonixie-l] Re: Vacuum pumps for evacuating DIY nixies?

[gregebert]

I bought an A/C evacuation pump from Harbor Freight Tools that supposedly 
can get down to 35 microns; I dont have any equipment to measure anywhere 
near that low. It was a relatively inexpensive pump, around 80 USD. I think 
it's sufficient to do some experimenting. My plan is to do some 
heating/baking while the system is fully evacuated, then pressurize with 
enough argon (it's cheap and widely available) to get a glow. If I can 
sustain the glow for several minutes while heating the tube, I will pump it 
down a second time to hopefully get rid of any additional released 
contaminants, then refill. After I've made a few of these, I'll make a 
decision to continue spending time-and-money, or decide my experiment was 
enough to satisfy my curiosity and move onto something else. I'm definitely 
not going to build nixies. There are a few other things I want to make that 
require a vacuum and some glasswork, such as a radiometer.

To do quality work, you will need another pump, typically a diffusion pump, 
which will get you below 1 micron and will be rather costly. The mechanical 
pump must first be used to pump down as much as possible, before the 
diffusion pump is used.

On Thursday, September 14, 2023 at 9:24:05 PM UTC-7 Miles Thatch wrote:

> Ok, that makes more sense. So in that case High Vacuum is required to 
> evacuate then. 
>
> What sort of pump would I need to be looking for to achieve that?
>
> On Thursday, September 14, 2023 at 5:41:36 PM UTC-4 gregebert wrote:
>
>> OK, that's once the tube is pressurized with the desired gas. However, to 
>> cleanse the tube of impurities, it must be baked-out and evacuated  to a 
>> rather high vacuum. Even at a high vacuum of 1 micron, there are still an 
>> extraordinary number of gas molecules present, on the order of 10^16 per 
>> liter. For home-made tubes I would actually want to re-evacuate the tube a 
>> second time, and refill, to get even more impurities removed.
>> On Thursday, September 14, 2023 at 10:28:06 AM UTC-7 Miles Thatch wrote:
>>
>>> From he Drive books archive
>>> Nixe Tube Data > NixieGas.pdf
>>>
>>> I was using the following excerpt from this book. Is it wrong or am I 
>>> getting something mixed up?
>>>
>>> On Thursday, September 14, 2023 at 11:43:46 AM UTC-4 gregebert wrote:
>>>
 I think you mean 10-50 microns (which is 1000 timer lower), not 10-50 
 Torr. One atmosphere of pressure is 760 Torr (760mm Hg).
 I've seen neon-sign texts stating the need to get below 1 micron for 
 proper bombarding, and I imagine nixie tubes are similar.

 On Thursday, September 14, 2023 at 6:57:51 AM UTC-7 Nick wrote:

> Look at Dalibor's videos.
>
> On Thursday, 14 September 2023 at 12:08:57 UTC+1 milesan...@gmail.com 
> wrote:
>
>> Good day.
>>
>> Since we require to reach vacuums of 10 - 50 torr depending on the 
>> gas mixture. What sort of vacuum pumps are we looking at sourcing to 
>> achieve those levels?
>>
>

-- 
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/d2d43224-ce86-40f9-b493-afd49d39e254n%40googlegroups.com.

Re: [neonixie-l] Re: Vacuum pumps for evacuating DIY nixies?

[Miles Thatch]

Ah, got it. So first the evacuation must take be done under much lower 
pressures, before filling the tube back in with the neon argon mixture. 
That makes sense.

So on the subject of the first question. What sort of pump would I have to 
be looking at? I assume High Vacuum pump is the category then? 

What about filling a tube with a liquid of some sort to displace the gasses 
and then replace the liquid with 

On Thursday, September 14, 2023 at 6:05:26 PM UTC-4 gregebert wrote:

> From what I've researched, getters target oxygen, but I'm certain there 
> are other rogue agents lurking out there to ruin your neon work.
>
> On Thursday, September 14, 2023 at 2:47:03 PM UTC-7 Nicholas Stock wrote:
>
>> That is also the purpose of using a getter too right? Remove the majority 
>> of the gaseous impurities before back filling with neon/penning gas mixture?
>>
>>
>> On Thu, Sep 14, 2023 at 2:41 PM gregebert  wrote:
>>
>>> OK, that's once the tube is pressurized with the desired gas. However, 
>>> to cleanse the tube of impurities, it must be baked-out and evacuated  to a 
>>> rather high vacuum. Even at a high vacuum of 1 micron, there are still an 
>>> extraordinary number of gas molecules present, on the order of 10^16 per 
>>> liter. For home-made tubes I would actually want to re-evacuate the tube a 
>>> second time, and refill, to get even more impurities removed.
>>> On Thursday, September 14, 2023 at 10:28:06 AM UTC-7 Miles Thatch wrote:
>>>
 From he Drive books archive
 Nixe Tube Data > NixieGas.pdf

 I was using the following excerpt from this book. Is it wrong or am I 
 getting something mixed up?

 On Thursday, September 14, 2023 at 11:43:46 AM UTC-4 gregebert wrote:

> I think you mean 10-50 microns (which is 1000 timer lower), not 10-50 
> Torr. One atmosphere of pressure is 760 Torr (760mm Hg).
> I've seen neon-sign texts stating the need to get below 1 micron for 
> proper bombarding, and I imagine nixie tubes are similar.
>
> On Thursday, September 14, 2023 at 6:57:51 AM UTC-7 Nick wrote:
>
>> Look at Dalibor's videos.
>>
>> On Thursday, 14 September 2023 at 12:08:57 UTC+1 milesan...@gmail.com 
>> wrote:
>>
>>> Good day.
>>>
>>> Since we require to reach vacuums of 10 - 50 torr depending on the 
>>> gas mixture. What sort of vacuum pumps are we looking at sourcing to 
>>> achieve those levels?
>>>
>> -- 
>>>
>> 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+...@googlegroups.com.
>>>
>> To view this discussion on the web, visit 
>>> https://groups.google.com/d/msgid/neonixie-l/ea949a55-26f7-41f0-9118-7f190f9d9fafn%40googlegroups.com
>>>  
>>> 
>>> .
>>>
>>

-- 
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/1d24c182-0db3-44eb-8172-d6b4f76cbe2an%40googlegroups.com.

[neonixie-l] Re: Vacuum pumps for evacuating DIY nixies?

[Miles Thatch]

Ok, that makes more sense. So in that case High Vacuum is required to 
evacuate then. 

What sort of pump would I need to be looking for to achieve that?

On Thursday, September 14, 2023 at 5:41:36 PM UTC-4 gregebert wrote:

> OK, that's once the tube is pressurized with the desired gas. However, to 
> cleanse the tube of impurities, it must be baked-out and evacuated  to a 
> rather high vacuum. Even at a high vacuum of 1 micron, there are still an 
> extraordinary number of gas molecules present, on the order of 10^16 per 
> liter. For home-made tubes I would actually want to re-evacuate the tube a 
> second time, and refill, to get even more impurities removed.
> On Thursday, September 14, 2023 at 10:28:06 AM UTC-7 Miles Thatch wrote:
>
>> From he Drive books archive
>> Nixe Tube Data > NixieGas.pdf
>>
>> I was using the following excerpt from this book. Is it wrong or am I 
>> getting something mixed up?
>>
>> On Thursday, September 14, 2023 at 11:43:46 AM UTC-4 gregebert wrote:
>>
>>> I think you mean 10-50 microns (which is 1000 timer lower), not 10-50 
>>> Torr. One atmosphere of pressure is 760 Torr (760mm Hg).
>>> I've seen neon-sign texts stating the need to get below 1 micron for 
>>> proper bombarding, and I imagine nixie tubes are similar.
>>>
>>> On Thursday, September 14, 2023 at 6:57:51 AM UTC-7 Nick wrote:
>>>
 Look at Dalibor's videos.

 On Thursday, 14 September 2023 at 12:08:57 UTC+1 milesan...@gmail.com 
 wrote:

> Good day.
>
> Since we require to reach vacuums of 10 - 50 torr depending on the gas 
> mixture. What sort of vacuum pumps are we looking at sourcing to achieve 
> those levels?
>


-- 
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/2836358d-238d-4f22-acfe-3f6ad653436bn%40googlegroups.com.

Re: [neonixie-l] Re: Vacuum pumps for evacuating DIY nixies?

[gregebert]

>From what I've researched, getters target oxygen, but I'm certain there are 
other rogue agents lurking out there to ruin your neon work.

On Thursday, September 14, 2023 at 2:47:03 PM UTC-7 Nicholas Stock wrote:

> That is also the purpose of using a getter too right? Remove the majority 
> of the gaseous impurities before back filling with neon/penning gas mixture?
>
>
> On Thu, Sep 14, 2023 at 2:41 PM gregebert  wrote:
>
>> OK, that's once the tube is pressurized with the desired gas. However, to 
>> cleanse the tube of impurities, it must be baked-out and evacuated  to a 
>> rather high vacuum. Even at a high vacuum of 1 micron, there are still an 
>> extraordinary number of gas molecules present, on the order of 10^16 per 
>> liter. For home-made tubes I would actually want to re-evacuate the tube a 
>> second time, and refill, to get even more impurities removed.
>> On Thursday, September 14, 2023 at 10:28:06 AM UTC-7 Miles Thatch wrote:
>>
>>> From he Drive books archive
>>> Nixe Tube Data > NixieGas.pdf
>>>
>>> I was using the following excerpt from this book. Is it wrong or am I 
>>> getting something mixed up?
>>>
>>> On Thursday, September 14, 2023 at 11:43:46 AM UTC-4 gregebert wrote:
>>>
 I think you mean 10-50 microns (which is 1000 timer lower), not 10-50 
 Torr. One atmosphere of pressure is 760 Torr (760mm Hg).
 I've seen neon-sign texts stating the need to get below 1 micron for 
 proper bombarding, and I imagine nixie tubes are similar.

 On Thursday, September 14, 2023 at 6:57:51 AM UTC-7 Nick wrote:

> Look at Dalibor's videos.
>
> On Thursday, 14 September 2023 at 12:08:57 UTC+1 milesan...@gmail.com 
> wrote:
>
>> Good day.
>>
>> Since we require to reach vacuums of 10 - 50 torr depending on the 
>> gas mixture. What sort of vacuum pumps are we looking at sourcing to 
>> achieve those levels?
>>
> -- 
>>
> 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+...@googlegroups.com.
>>
> To view this discussion on the web, visit 
>> https://groups.google.com/d/msgid/neonixie-l/ea949a55-26f7-41f0-9118-7f190f9d9fafn%40googlegroups.com
>>  
>> 
>> .
>>
>

-- 
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/f1c43d05-0f9d-44fe-8148-ff6a0b07a3a2n%40googlegroups.com.

Re: [neonixie-l] Re: Vacuum pumps for evacuating DIY nixies?

[Nicholas Stock]

That is also the purpose of using a getter too right? Remove the majority
of the gaseous impurities before back filling with neon/penning gas mixture?


On Thu, Sep 14, 2023 at 2:41 PM gregebert  wrote:

> OK, that's once the tube is pressurized with the desired gas. However, to
> cleanse the tube of impurities, it must be baked-out and evacuated  to a
> rather high vacuum. Even at a high vacuum of 1 micron, there are still an
> extraordinary number of gas molecules present, on the order of 10^16 per
> liter. For home-made tubes I would actually want to re-evacuate the tube a
> second time, and refill, to get even more impurities removed.
> On Thursday, September 14, 2023 at 10:28:06 AM UTC-7 Miles Thatch wrote:
>
>> From he Drive books archive
>> Nixe Tube Data > NixieGas.pdf
>>
>> I was using the following excerpt from this book. Is it wrong or am I
>> getting something mixed up?
>>
>> On Thursday, September 14, 2023 at 11:43:46 AM UTC-4 gregebert wrote:
>>
>>> I think you mean 10-50 microns (which is 1000 timer lower), not 10-50
>>> Torr. One atmosphere of pressure is 760 Torr (760mm Hg).
>>> I've seen neon-sign texts stating the need to get below 1 micron for
>>> proper bombarding, and I imagine nixie tubes are similar.
>>>
>>> On Thursday, September 14, 2023 at 6:57:51 AM UTC-7 Nick wrote:
>>>
 Look at Dalibor's videos.

 On Thursday, 14 September 2023 at 12:08:57 UTC+1 milesan...@gmail.com
 wrote:

> Good day.
>
> Since we require to reach vacuums of 10 - 50 torr depending on the gas
> mixture. What sort of vacuum pumps are we looking at sourcing to achieve
> those levels?
>
 --
> 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/ea949a55-26f7-41f0-9118-7f190f9d9fafn%40googlegroups.com
> 
> .
>

-- 
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/CAOX%2BRHKzBPfUKD9PBEq%3DH7p6OLhMOOrd4H_Mo-ayBXbzsR8vAw%40mail.gmail.com.

[neonixie-l] Re: Vacuum pumps for evacuating DIY nixies?

[gregebert]

OK, that's once the tube is pressurized with the desired gas. However, to 
cleanse the tube of impurities, it must be baked-out and evacuated  to a 
rather high vacuum. Even at a high vacuum of 1 micron, there are still an 
extraordinary number of gas molecules present, on the order of 10^16 per 
liter. For home-made tubes I would actually want to re-evacuate the tube a 
second time, and refill, to get even more impurities removed.
On Thursday, September 14, 2023 at 10:28:06 AM UTC-7 Miles Thatch wrote:

> From he Drive books archive
> Nixe Tube Data > NixieGas.pdf
>
> I was using the following excerpt from this book. Is it wrong or am I 
> getting something mixed up?
>
> On Thursday, September 14, 2023 at 11:43:46 AM UTC-4 gregebert wrote:
>
>> I think you mean 10-50 microns (which is 1000 timer lower), not 10-50 
>> Torr. One atmosphere of pressure is 760 Torr (760mm Hg).
>> I've seen neon-sign texts stating the need to get below 1 micron for 
>> proper bombarding, and I imagine nixie tubes are similar.
>>
>> On Thursday, September 14, 2023 at 6:57:51 AM UTC-7 Nick wrote:
>>
>>> Look at Dalibor's videos.
>>>
>>> On Thursday, 14 September 2023 at 12:08:57 UTC+1 milesan...@gmail.com 
>>> wrote:
>>>
 Good day.

 Since we require to reach vacuums of 10 - 50 torr depending on the gas 
 mixture. What sort of vacuum pumps are we looking at sourcing to achieve 
 those levels?

>>>

-- 
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/ea949a55-26f7-41f0-9118-7f190f9d9fafn%40googlegroups.com.

RE: [neonixie-l] Re: Vacuum pumps for evacuating DIY nixies?

[Tidak Ada]

Microns what? Liquid hydrogen, liquid water liquid Wolfram or liquid mercury?

 

eric

 

Van: neonixie-l@googlegroups.com [mailto:neonixie-l@googlegroups.com] Namens 
gregebert
Verzonden: donderdag 14 september 2023 17:44
Aan: neonixie-l
Onderwerp: [neonixie-l] Re: Vacuum pumps for evacuating DIY nixies?

 

I think you mean 10-50 microns (which is 1000 timer lower), not 10-50 Torr. One 
atmosphere of pressure is 760 Torr (760mm Hg).

I've seen neon-sign texts stating the need to get below 1 micron for proper 
bombarding, and I imagine nixie tubes are similar.

 

On Thursday, September 14, 2023 at 6:57:51 AM UTC-7 Nick wrote:

Look at Dalibor's videos.

On Thursday, 14 September 2023 at 12:08:57 UTC+1  <mailto:milesan...@gmail.com> 
milesan...@gmail.com wrote:

Good day.

 

Since we require to reach vacuums of 10 - 50 torr depending on the gas mixture. 
What sort of vacuum pumps are we looking at sourcing to achieve those levels?

-- 
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/3f75ac87-6a24-417b-b9a5-36e11ca8ac3en%40googlegroups.com
 
<https://groups.google.com/d/msgid/neonixie-l/3f75ac87-6a24-417b-b9a5-36e11ca8ac3en%40googlegroups.com?utm_medium=email_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 neonixie-l+unsubscr...@googlegroups.com.
To view this discussion on the web, visit 
https://groups.google.com/d/msgid/neonixie-l/!%26!AAAYAPDddShx705MuX20yCpp0vvCgAAAEPv/xJXSYDZOn7BpKZ2nWYEBAA%3D%3D%40zeelandnet.nl.

[neonixie-l] Re: Vacuum pumps for evacuating DIY nixies?

[gregebert]

I think you mean 10-50 microns (which is 1000 timer lower), not 10-50 Torr. 
One atmosphere of pressure is 760 Torr (760mm Hg).
I've seen neon-sign texts stating the need to get below 1 micron for proper 
bombarding, and I imagine nixie tubes are similar.

On Thursday, September 14, 2023 at 6:57:51 AM UTC-7 Nick wrote:

> Look at Dalibor's videos.
>
> On Thursday, 14 September 2023 at 12:08:57 UTC+1 milesan...@gmail.com 
> wrote:
>
>> Good day.
>>
>> Since we require to reach vacuums of 10 - 50 torr depending on the gas 
>> mixture. What sort of vacuum pumps are we looking at sourcing to achieve 
>> those levels?
>>
>

-- 
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/3f75ac87-6a24-417b-b9a5-36e11ca8ac3en%40googlegroups.com.

[neonixie-l] Re: Vacuum pumps for evacuating DIY nixies?

['Nick' via neonixie-l]

Look at Dalibor's videos.

On Thursday, 14 September 2023 at 12:08:57 UTC+1 milesan...@gmail.com wrote:

> Good day.
>
> Since we require to reach vacuums of 10 - 50 torr depending on the gas 
> mixture. What sort of vacuum pumps are we looking at sourcing to achieve 
> those levels?
>

-- 
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/600990dd-28e6-4719-867d-bb7b62738632n%40googlegroups.com.