Cool DIY Vacuum Tube Video

For the design and construction details of ion guns, necessary for more advanced designs and lower vacuums.
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Mark Rowley
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Cool DIY Vacuum Tube Video

Post by Mark Rowley » Sun Jul 06, 2008 3:28 am

I thought everyone here may get something out of watching this video. It shows (quite elequently) how easy it is to make your own vacuum tubes. It starts off with the guy cutting stainless anode / cathode parts with a Swiss Army knife. The small spot welder is nice also. Anyway, the video gave me some assistance with some ion gun construction I have been attempting lately.

Give it a "look-see"!

http://www.grump.org/2008/01/on-eleganc ... tubes.html

Mark Rowley

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Steven Sesselmann
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Re: Cool DIY Vacuum Tube Video

Post by Steven Sesselmann » Sun Jul 06, 2008 4:17 am

Wow!

Thanks Mark, I enjoyed watching that, that guy was amazing, looked as if he had made all his tools too.

Inspirational!

Steven
http://www.gammaspectacular.com - Gamma Spectrometry Systems
https://www.researchgate.net/profile/Steven_Sesselmann - Various papers and patents on RG

myID
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Re: Cool DIY Vacuum Tube Video

Post by myID » Sun Jul 06, 2008 3:04 pm

Thanks for sharing... That guy is an artist- and he looks like one too

richnormand
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Re: Cool DIY Vacuum Tube Video

Post by richnormand » Sun Jul 06, 2008 7:40 pm

Just spent an hour browsing the site.
Excellent
This is superb and a real inspiration.
Nice find, thanks.

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Re: Cool DIY Vacuum Tube Video

Post by DaveC » Mon Jul 07, 2008 6:16 am

I'll just add my thanks, too, Mark. Very interesting site. The glassblower's art is indeed fascinating.


Dave Cooper

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Carl Willis
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Re: Cool DIY Vacuum Tube Video

Post by Carl Willis » Mon Jul 07, 2008 7:46 am

Very interesting video.

Towards the end, we get a brief glimpse of the dude's vacuum system, which is not at all conventional. It looks like he has built a Sprengel pump or some close variant involving flowing mercury.

The regenerative receiver is cute.

Surprising to see this tube in a UHF tuned-plate circuit of some kind, maybe an oscillator, made with what looks like a piece of 300-ohm feedline magnetically coupled at the shorted end with to a pickup loop of the same stuff. If that circuit works, it speaks quite highly of this tube's high-frequency capabilities!

-Carl
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Re: Cool DIY Vacuum Tube Video

Post by Mxeno » Wed Jul 09, 2008 5:52 pm

Have a look at his site
http://paillard.claude.free.fr/triodes/ ... ompes.html
He did also a very clever molecular drag pump, with a simple conical rotor enclosed between 2 stators with a spiral engraving. The motor is in the foreline vacuum.
Homemade molecular drag pump! Respect!

- Marc

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Re: Cool DIY Vacuum Tube Video

Post by DaveC » Wed Jul 09, 2008 7:23 pm

C'est Magnifique!! Whew boy... my limited French vocabulary was put to the test., reading the descriptions.

But very interesting site....that's quite some DIY talent showing there.

The last photo's caption.. indicated 20 microns ( actually .020 mb) which would seem to be the working pressure of the combined system.. molecular drag (?) and a two stage piston pump.

Thanks Marc.

Dave Cooper

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Re: Cool DIY Vacuum Tube Video

Post by Mxeno » Wed Jul 09, 2008 10:28 pm

From the index page
http://paillard.claude.free.fr
there is a link to the Google translator
then go to Triodes in the first list, then pumps...
Bonne lecture!

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Steven Sesselmann
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Re: Cool DIY Vacuum Tube Video

Post by Steven Sesselmann » Wed Jul 09, 2008 10:51 pm

Did any of you notice that the wire feedthrough for the grid, had some kind of coating on the section that was squashed in the glass. I have seen this on light bulbs too.

I assume it is something to make the glass bond to the metal, but does anyone here know what it is?

On this subject, has anyone here ever tried to make a fusor sealed inside a glass bulb?

I know this was attempted here at Sydney Uni, but I am not sure if it succeeded. As far as I know, it was a request by the local science museum, who wanted a neutron producing demonstration fusor without the hassles of a vacuum pump.

Steven
http://www.gammaspectacular.com - Gamma Spectrometry Systems
https://www.researchgate.net/profile/Steven_Sesselmann - Various papers and patents on RG

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