Hello, I want to make vacuum (200-10 pascal) in a jar. I bought a vakuum pump, but its gas inlet thread is 7/16-20, that I can't find in all shops (is it equal to some other thread?).
Only vacuum level is about 30 kPa. I measure with a medical injector. I hear vacuum leak in gas inlet. I tried to glue up with hot glue a tube to the jar, but there still vacuum leak.
If I would buy 7/16-20 thing, I would glue up with cold welding.
What can I do?
I made gasket from vacuum rubber and then leak is very very little. For first time I need to press down tube to gasket, for second time atmosphere doing it.
But I wonder why oil become dark. Then it's become normal, is it air bubbles? Also I want to know how long time I need to make vacuum 200 Pa? My vacuum pump is for 10 Pa the lowest value.
I know about gas particles. Am I need to expand tube diameter to same as gas inlet to make bigger square?
>>10858 Show us a picture of the actual pump you have. Close-up of the threads and the surrounding area.
I would recommend disassembly of the pump to replace the gas inlet with something better. Show us a picture of the inside of the pump.
>>10891 I don't want to deanonimy me. Maybe my problem solved with vacuum ruber gasket.
Water is boiled, it's about 10-20 kPa but medical injector shows 30 kPa.
>>10911 You can get a sheet of white paper in the background when taking the picture and use a text editor to strip the metadata such as gps coordinates out of the image.
>>10949 But glow niggers can check the grain structure of the metal and determine which country and mill the metal originated from, and then cross-reference that with manufacturer information and model identification to deanonymize our small-dicked OP. Amirite.
Oh and btw OP has a small dick and is trying to use vacuum to get it to normal size. Lol beta
>strip the metadata such as gps coordinates out of the image.
this is very important although not enough. Each CCD array has a unique noise pattern. By analyzing the spatial and statistical distribution of that noise you can identify which camera was used to make a picture. This is for sure. Possibly if the OP already posted in niggernet any picture taken with that camera the glowniggers could correlate the pump picture with other pictures and deanonymize the OP. Unlikely but possible. The solution would be to strip the lowest bit from all the channels and replace it with some random noise (just adding noise could possibly be enough but it's much better to remove the least significant bit first).
>I don't want to spoil gas inlet
then use some silicone instead of epoxy. this will be less effective but silicone can be easily removed so you won't destroy your pump. At least you should see some improvement
I want to make plasma with vacuum pump. But I need transformer, it's expensive and I need money for this.
Hot to get money? But I don't want to do what I don't want.
Maybe I can make transformer by myself but where I can find copper?
>>10955 Find an old microwave and get the transformer.
But be careful, you can kill yourself very easily.
Don't even bother making one yourself, it needs tons of maths and special materials (silicon steel plate).
Hello, I want to make vacuum (200-10 pascal) in a jar. I bought a vakuum pump, but its gas inlet thread is 7/16-20, that I can't find in all shops (is it equal to some other thread?).
Only vacuum level is about 30 kPa. I measure with a medical injector. I hear vacuum leak in gas inlet. I tried to glue up with hot glue a tube to the jar, but there still vacuum leak.
If I would buy 7/16-20 thing, I would glue up with cold welding.
What can I do?