Hans,

Just a simple question, but it makes a great deal of difference.  Do you
allow sufficient room in your mixing container for the mix to fully come to
'a head' without resorting to return to atmospheric pressure before the
container overflows?

If you give it enough room (say 3-4X the material volume), once the material
gets a full 'head' on it, it will suddenly collapse, and you are done
without the extra time it takes to vent to atmospheric pressure (and return
to vacuum, if you are doing so).

You are probably already doing this, but just in case  .... my little two pence

Steven Creswick
CTS RFIM

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