No, sorry, not really -- most of my work have been with standard composite vac systems.
I can see that when the components you want to make has to endure hard vacuum (as i space vehicles/sats) you need to degas to a very low residual pressure.
If I had that sort of need for hard vacuum, I would probably have the chambers purpose built by a mechanical engineering company with experience in Aerospace components.
But, as I stated, first I would hook up a two-stage hard vac pump to the (in this setting) very affordable EC degassing chamber or catch-pot, and see how it copes with hard vac ..
If it works, then you are on a roll ..
chances are that the only problem you will have is that it may leak very slightly, and so put a load on the high vac pump.
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