OK I'm in the process of setting up my purging chamber I've done stupid amounts of research and am looking for advice Just fyi to get an idea So far I have Ss baster for tube 1/2" thick 12" x 12" palsun Polycarbonate sheet for vac chamber lid. IR thermometer gun *Looking for 400 mesh (50 mic.) Screen 3" x 3" to prevent blow out PTFE film to blast into & unbleached coffee filters Hose clamp, 2" oil filled vacuum pressure gauge 1/4" male 50 micron air filter for back filling air in from atmosphere. 1/4" brass 4 way, Teflon tape 1/4" brass bulkhead female( if I port into PC vessel) (2) 1/4" male to female ball valves Pyrex dishes Electric griddle 1st. I'm gettoing a great deal on a JB eliminator dv-6e 2 stage 6cfm pump rated @ 25 micron...that should work great correct? Any experience or comments? All welcome. 2nd. Should I drill through my 1/2" polycarbonate sheet? Or the pressure cooker vessel? 3rd. Is it OK to use standard 1/4" barbs and polyethylene tubing like from lowes as my purge chamber vac hose? And an inner tube from a bicycle as my chamber lid gasket? Any help greatly appreciated.