How to Make a Lab Vacuum Chamber
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- เผยแพร่เมื่อ 13 ต.ค. 2024
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This Vacuum System allows to use Bell Jars of several sizes. I use kitchen glass bowls as bell jars. The base is an aluminum plate of 10 mm thick. The gasket is rubber from an inner tube from a car tyre. The connectors and valves are GAS 1/4 thread. The four (4) spark plugs give electrical isolation and air tightness. Each one is connected to a banana conector (banana socket). This provide an easy way to use the chamber with detectors, sensors (i.e. electric conductivity pressure sensors); electrodes for plasma arcs, cathodic rays, X-rays, triodes (thermionic emission), etc.)
I did that. I put the bowl on a solid aluminum surface. But I need a gasket (rubber) to seal it. I also need valves in order to connect the vacuum pump, release pressure, connect a vacuum-meter or vacuum gauge and several wall bushings in order to put electricity into and/or electricity out (measuring electrical values). This is a Laboratory Vacuum Chamber, so it needs a wide functionality.
Yes, I see this!. Thank you for your comment and reflections.
It is true that is very difficult to solder, perhaps kind of brazing or welding would be necessary. I only tried once to connect the electrodes, but not soldering but with plastic caps or tops (I made them with polypropilene bar with a lathe), so the caps are threaded to fit the spark plug thread and make connection by pressure, since the caps have a cable inside at the end of the threaded hole.
Tell me what you think of this...
Me encanta tu cámara de vacío!!!!
Disfruto observando los experimentos que realizas en ella.
Valves in order to connect the vacuum pump, release pressure, connect a vacuum-meter or vacuum gauge and several wall bushings in order to put electricity into and/or electricity out (measuring electrical values).
love the angle you got and the editing!
That was great! Would lapping & polishing the aluminum around the seal perimeter help?
Have you considered making a second hemisphere on the bottom and instead of the tapped and ported aluminum plate you tap and port a ring between the two glass bowls?
It's like educational howtobasic. Honestly though, very interesting! I'd do this myself if I had the space and funds.
+DaffyDaffyDaffy33322 Thanks. More important the space. The only think that costs some money is the pump, at around 80-90 $.
Esto es tremendamente increíble!!!!
You could get a better seal with the bell jar by using some vacuum grease at the glass-rubber and rubber-plate interfaces. It might get you to lower pressures.
Very nice! I am tasked with the same project for my lab, and this vid was extremely helpful. I have a polyethylene base plate, though, but I think it will still work. If not, I will try an aluminum base plate like yours. Thanks!
Absolutely amazing! Thanks for sharing this video. I don't know why one moron gave you a thumbs down for this, it's an absolutely incredible video. Please continue with your videos, they are amazingly fun to watch! I'm off to watch your whole channel now ;-)
Nice job!
Will this help in taking the air bubbles out of molds?
Well done! I once also had the idea to make one out of a steal cocking bowl. Usual sparkplugs have a resistor included, don’t they?
Thank you! I didn't know about the resistor. I will try to measure...
Thank you!
great video any ideas to a vacuum pump connectected to a tank to hold vacuum. And then maintain that?
Killer video man. Thanks for sharing it.
You gave me some things to consider and think about. You left out one important part for any vacuum chamber; Holding a vacuum. What is the leak rate for this design?
I didn't test that. All the experiments I have made are short term, but you are right it would be good to check the leak rate. I understand it depends much on the gasket,,,
I just mentioned this so if you need to test for example an altimeter and the needle moves to a neutral point on its scale and not where it should be how can you be sure if the instrument has a leak or the vacuum system has the leak or both. Without spending a lot of money all vacuum systems will most likely have some leakage. The rate of loss of vacuum then becomes important. Something to think about. Gotta go to have it out with an atheist. They always amuse me.
Industrial supplies stores. In my case at a pneumatics and hydraulics store, here in Spain.
buenas tardes. De que parte eres de España? ando como loco buscando a una persona que me ayude a montar una campana de vacío. Saludos.
amigo, great video
one question: where can I buy the vacum pump? what is the model name ?
Francisco
The spark plug center electrode isn't a perfect conductor because of the nickel alloy sheath so you can't solder to it and there is a significant voltage drop. Doesn't work so if measuring voltage through it. Maybe there is a way to strip the nickel to get to the copper center electrode. thoughts? hope you see this
Fast hands dude !
Perhaps, but I think the part that needs more work is the bowl since they are not even.
Are the spark plugs insulated from the base? I assume you would use just one connector in the plug, and so it wouldn't spark but just produce a voltage difference? I need something similar to make a gas discharge tube, and I really don't want to spend a year forming pyrex tubes over tungsten, etc.
+Putins Cat The spark plugs have two poles, let's call them mass and center. Only center is insultaded from the base so you need two spark plugs to introduce (or get from a sensor) current in the chamber. The problem with this design is that when you reach the discharge voltage from the center of one plug to the mass it releases a spark, really I think it is two sparks: from center of spark plug 1 to mass----mass to center of spark plug 2. It is a separation distance matter. Good luck.
mopatin Thanks. I have found that I can buy feed thru connectors also that are similar to sparkplugs. Look up Magnetron Sputtering for what I am trying for.
Ok, well I think the NGK CR7E has an internal resistor to reduce EM noise, but the BOSCH does not. I'm going to get some of those to see if that will work. The Bosch also has a copper core electrode so it should solder as well.
Me encanta!!!!
Esta buenísimo!!!!
Impressiv !
( any results with the Keshe reactor ?? )
Is this JUST to release the vacuum pressure?
That was all the way cool. Vaccum Cool That Is.
how cool would it be to make a small box vacuum and put a
gyroscope in it with a magnet under it with a negative pole
facing towards the positive pole on the gyroscope.
And by somehow you make the gyroscope spin,
wouldn't it spin for ever?
+Bartsbass th-cam.com/video/8nLd5q7UOyE/w-d-xo.html
Yes, I see. I've overcome the connection problem but the issue is that the nickel tip is resistive. Measuring from one end to the other, I get about 1.66 Ohms. I'm going to try to get the nickel out and get down to the copper inner electrode somehow
can i vaccuum distill solvents and water with this at lower temps
I was thinking along these lines to make a diy vacuum chamber for induction heating experiments under vacuum, with a gas inlet for flushing with argon/nitrogen.
HI mopatin,
What is the thickness of the aluminum base plate in this video?
Thanks!
Jason
+Jason Liu Around 10 milimeters.
Ok thank you! How does the spark plug create a good, airtight seal with the metal base plate?
Great video, hope people know to pull the nylon resistor out of the spark plugs. :)
what nylon resistor ?
Where did you buy your fittings?
What's the minimum pressure it can achieve?
great video. really helped, thanks.
Thanks to you too for the comment.
CAN YOU GIVE A LIST OF MATERIALS PLEASE
for what you use electric on the chember
i'm going to need two vacuum chambers for my time machine
Why for the Spark Plugs?
+raptorjesus959 IN order to pass electricity through the wall (base). For example for sensors or for electrodes, filaments, etc.
+mopatin yes, but in your video you dont use them, right?
+raptorjesus959 Right!
how much would you say this project cost to construct?
Can't tell you because I had some of the materials. I found from garbage the aluminum plate. Without that plate perhaps 40 - 50 $ (pump not included).
mopatin I will probably head the same route. I am planning on building a display vacuum chamber for my fluids professor. It is a lovely construction.
+mopatin Could you also use a fridge compressor as a pump
Yes connecting this the other way round. th-cam.com/video/D6f7MPi0Vvg/w-d-xo.html
Well obviously you would connect it the other way round
What kind of valve you are using ...?
Pneumatic valves. Industrial suppliers compressed air valves.
mopatin Do you have the link...?
skycollection Creo que esta gente de Parker tienen también delegación en México.
www.parker.com/portal/site/PARKER/menuitem.7100150cebe5bbc2d6806710237ad1ca/?vgnextoid=f5c9b5bbec622110VgnVCM10000032a71dacRCRD&vgnextfmt=EN&vgnextdiv=&vgnextcatid=5259&vgnextcat=MINI+BALL+VALVES&Wtky=Valves
1:54 is that a reverse thread? if so good job... if not.. bet you had a do over! :)
Bravo
What if I dont want to leave the balloon inside ???
You need to take care with the quality of the glass chamber, one time in the lab a Erlenmeyer literary imploded for the negative pressure, using a generic bomb , and the glasses encrusted in the melamine table. We have luck that nobody was around at the time
Esteban Espinosa Vidal True. These are made of Pirex thick glass. But it is a good idea to wear goggles always.
oh1:59... see how that tape piled up? simple fix... when you put on the sealant tape turn in the direction of the thread... otherwise switch to the paste and forget about it.
why all the cables if u didn't use any energy? i miss something...any one can tell me what i miss?
what if you were burning something in side. It would be so exiting to watch this!
Genio!!!!!
¿Para que son las bujías? ¿Quieres crear plasma?
Perdona. Ya lo he leido en ingles. Otra pregunta ¿Hasta que vacío se podría conseguir con este sistema?
Son pasamuros. Para poder pasar una corriente eléctrica tanto de fuera a dentro como de dentro a fuera.
Depende todo de la bomba. Con una mecánica puedes bajar hasta 25 micrones. Por debajo de eso, para alto vacío, necesitas bombas de difusión.
that is 1 proper chamber with intence vacuume
neat
If my ask, why is the baloon expanding, I know there is something to do with the ideal gas law, but wow
Because the air pressure outside the balloon is decreasing, and the air inside the balloon tries to escape = expansion
Arlind530d. Com thnk u
what would you charge to craft me a table?
Buff. Distance is a problem. You may try in a local metal workshop. These kind of things I think were easier 100 years ago than today, because nowadays there are less craftsmen. Good luck.
What's the point of the spark plugs you explained nothing in this video
Why use spark plugs? Why not a bolt or something else?
Because they have a good insulator like porcelain and the thread is insulated from the core.
mopatin Ok. But a bolt could work the same as long as you insulate it though, right?
mopatin Yes.
With all those spark plugs I thought you were going to bring the Frankenstein monster back to life....too much work for just a simple
Vacuum desiccator.
A vacuum has ZERO pressure yet you still show pressure. This is not like the vacuum of outer space. In fact, this is a really LOW vacuum demonstration that still has thousands of times more pressure than outer space.
+Greg Swamp M8 what are you on about. A vacuum chamber made at home is not going to form a complete vacuum. Its gona give you reduced atmospheric pressure for experiments and chemical reactions. (has nothing to do with the vacuum of space)
I do not understand wtf you did here. Why make a chamber like this? Why not just put the bowl on a solid aluminum surface?
Comment 100
1:19 umggh