[chbot] High Vacuum stuff

Mark Atherton markaren1 at xtra.co.nz
Sun Apr 7 08:59:09 BST 2019

"Low vacuum is around 10^-4 times the atmosphere. High vacuum is 10^-8 
atmospheres. There is even Ultra-High vacuum that is around 10^-12 
atmospheres. So when you say something has higher vacuum, it’s the same 
as saying that there is less air 
Learn something every day...

Pulling a large volume one.

However the phrase "continuous supply of lots of suck" seems a little 
odd syntactically since you are supplying a whole-lot-of-nothing, and 
lots of it... I need to add a smily face here, since I really can't be 
bothered with the details.

Just sayin :)


On 7/04/2019 6:58 PM, chris at trash.co.nz wrote:
> If it's a vacuum, wouldn't it be low?  not high?  Just saying.....
> And are you looking for lots of vacuum as in a continuous supply of 
> lots of suck or just to pull a large volume pure vacuum once?
> Cheers, Chris H.
> On 2019-04-07 11:58, Mark Atherton wrote:
>> Looking into building a metal deposition system, but need lots of 
>> vacuum.
>> Rouging pump, and bell-jar in hand, but lots of stuff missing like a
>> turbo-molecular pump, controller and associated instrumentation.
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