Re: [neonixie-l] Vacuum system - status report

2013-01-28 Thread Dalibor Farný
Hi Michael, the numbers for nixi tubes is one of the problem I havent sufficiently solved yet. Are your laser cutters able to produce numbers that have 0.4mm wide lines? The material would be 0.1mm thick stainless steel sheet (316L). I could send You some sheets to give it a try, just send me

Re: [neonixie-l] Vacuum system - status report

2013-01-28 Thread Dalibor Farný
One more thing - I would also provide the layout, Dalibor 2013/1/28 Dalibor Farný dali...@farny.cz Hi Michael, the numbers for nixi tubes is one of the problem I havent sufficiently solved yet. Are your laser cutters able to produce numbers that have 0.4mm wide lines? The material would be

Re: [neonixie-l] Vacuum system - status report

2013-01-28 Thread kay486
Im not sure, but i think you might be able to make the grid from multiple horizontal wires that would be spot-welded together. Something like the ZM1175 or ZM1210 have. It really depends oh how well you could weld multiple wirest at once. On Monday, 28 January 2013 19:45:45 UTC, Dalibor wrote:

Re: [neonixie-l] Vacuum system - status report

2013-01-28 Thread John Rehwinkel
Yes, I think the original nixie tubes were made by photo etching.. There is so much work on the tubes (or just preparing the stuff for now) that I would be very glad to get rid of one problem - making the number for nixie tubes.. But I am afraid I will have to photo-etch the anode grid

Re: [neonixie-l] Vacuum system - status report

2013-01-28 Thread threeneurons
I use to work closely with the laser people. Use to cut stainless (316 304) down to around 0.010 (0,25mm). Should be able to do 0,1mm thick, but cuts 0,4mm (0.016) apart, is going to be iffy. On Monday, January 28, 2013 4:09:44 AM UTC-8, Dalibor wrote: Hi Michael, the numbers for nixi

Re: [neonixie-l] Vacuum system - status report

2013-01-28 Thread David Forbes
On 1/28/13 6:36 PM, John Rehwinkel wrote: Yes, I think the original nixie tubes were made by photo etching.. There is so much work on the tubes (or just preparing the stuff for now) that I would be very glad to get rid of one problem - making the number for nixie tubes.. But I am afraid I

Re: [neonixie-l] Vacuum system - status report

2013-01-28 Thread Michael Gregg
I agree with threeneurons that cuts down to that distance apart are going to be iffy. I know that there are companies that laser cut solder stencils with machines like I have, though, they might be using a different laser head than the one I cut with. So, Dalibor, I'll contact you offline with

Re: [neonixie-l] Vacuum system - status report

2013-01-28 Thread John Rehwinkel
Otherwise, is there anybody out there familiar with chemical etching stainless? Not much to it - it's like etching a printed circuit board. Coat with resist, expose to pattern, develop, etch. Places like Micro-Mark sell kits to do this:

Re: [neonixie-l] Vacuum system - status report

2013-01-27 Thread michael gregg
Sounds good. And yes, other people that have made nixie tubes do seem to be getting good results with the level of vacuum that you are getting. Also, I have all sorts of crazy laser cutters here. I may be able to come up with a good stack of numbers or other characters if you'd like them for your

Re: [neonixie-l] Vacuum system - status report

2013-01-27 Thread John Rehwinkel
Also, I have all sorts of crazy laser cutters here. I may be able to come up with a good stack of numbers or other characters if you'd like them for your nixie tubes. I have never cut anything so fine with these lasers, but according to the manufacturer, I should be able to do it. Cool. Let

Re: [neonixie-l] Vacuum system - status report

2013-01-26 Thread Dalibor Farný
Hello Jens, pretty sophisticaed way of leak detection ;-) what do You think by the insufficient greasing on my needle valve? The rubber o-ring used to connect the valve to the system was not greased properly? Or something else? it is not airtight if the scale is adjusted to just zero - does it

Re: [neonixie-l] Vacuum system - status report

2013-01-26 Thread Dalibor Farný
I am not sure if the picture is visible, so it is attached.. Dalibor 2013/1/26 Dalibor Farný dali...@farny.cz Hello Jens, pretty sophisticaed way of leak detection ;-) what do You think by the insufficient greasing on my needle valve? The rubber o-ring used to connect the valve to the

Re: [neonixie-l] Vacuum system - status report

2013-01-26 Thread Michael Gregg
On 01/25/2013 03:52 PM, jb-electronics wrote: Hi folks, I am still working on Nixie tubes, but I have to take it a little slow at the moment because I switched my university and I am currently sort of living in two cities ;-) However, today I had some time so I took a look at my vacuum

Re: [neonixie-l] Vacuum system - status report

2013-01-26 Thread Dalibor Farný
Hello Michael, 10E-6 torr is not necessary. For testing purposes is 10-2 torr enough, because then the tube is filled to somewhere around 30 torr what is much higher pressure.. The initial pressure is not so critical in nixie tubes, but influeces the total lifetime of the tube.. However it would

[neonixie-l] Vacuum system - status report

2013-01-25 Thread jb-electronics
Hi folks, I am still working on Nixie tubes, but I have to take it a little slow at the moment because I switched my university and I am currently sort of living in two cities ;-) However, today I had some time so I took a look at my vacuum system. My problem was that even after I closed