: I have used my set-up only three times so I am hardly an expert
: (still a pert, I guess). But I have yet to need a trap, as the
: breather layer has caught all the resin before it gets to the
: vacuum line. I have some 4" schedule 40 pipe, end caps, and
: barbs all ready, but have not assembled it yet. I'll try to post
: some photos tonight.

No resin getting to the line is my experience as well.
Having a vacuum 'reservoir' is handy as you can draw out the air in the bag more quickly.

The pressure cooker idea sounds good-the older ones made with thick aluminum should be easy to drill and tap.

Some good ideas are at:
http://www.joewoodworker.com/veneering/welcome.htm

Also at:
http://www.westsystem.com/ss/assets/HowTo-Publications/Vacuum-Bagging-Techniques.pdf