--- In VacuumX@..., gjnelson@a... wrote:
Were you thinking of this?
It is a sorption pump and is useful for small things.
I think it could be used very well for testing gauges but not for
pumping down a
chamber of a significant size
some time ago on the net i saw a site witch talked about plans to
make
your own VD pump out of ordinary threaded steel or copper pipes
and
fittings and performed quite good especialy from out of standard
plumbing stuff, i cant remember what magazine it was all i know
that
it was a monthly science mag like american scientist or amateur
scientist or something like that
no no i was talking about a real home made vapor diffusion pump damm
i cant remember in witch magazine and what article it was :( ill try
to trace that info
