I turned a groove in the lid and made a seal out of some 4mm neoprene sheet we have. I had to cut it out with a knife though so its not perfect. Holds vacuum though. 
Oh also used loads of wacker grease around the seal
Also been sat a 28.5 hg for 8hours and another pic
http://www.fibreglast.com/product/Resin_Trap_01500_A/Vacuum_Bagging_Vacuum_Infusion
Hmmmm which one should I get? Both are the same size one is $80 and the other is $300. Hmmm :blink1: Thanks for sharing hojo. If I ever decide to buy a real catch pot I will go with the $80 HF. Currently I have something like Canyons setup only in a 4" dia. pipe so it can hold more resin. Only thing is I never get resin in it because of when I shut my resin of so it’s lasting me along time.
Because Fibreglast is a ripoff!!!
Also, the HF one doesn’t come with the right fittings, or vac gauge…but that isn’t much money.
No problem. Fibreglast is a complete rip off. You can buy that same pressure pot for around $100 elsewhere, but I dont like those ones that much, they are taller and lighter and not as well made. the ones from harbor freight are heavy and fatter, so they wont fall over and the quality is much better.
I bought my HF pressure pot for 40 bucks from Craiglist, vac gauges and fittings were another 20 bucks although mine required a fair bit of cleaning before it looked decent and worked.
I am having them made by another company for me. Basicly they are cooking pans, with a vacuum connection drilled and threaded into the side, and the lid is a thick piece of acrylic (on the large one the sheet is 30mm thick, or about 1-1/4" thick. In that are a vacuum gauge, and 4 push-through connectors.
Have them made in 3 sizes now. (10, 25 and 70 liters)
I also made them from PVC piping, works as well, but no see through lid.
to bring up an old thread here
What is on the inside of pressure pots? I’m not quite sure how they work aside from just allowing gravity to pull down the resin and keep it from going to the pump. Is there a media inside that physically traps the resin as goes through the pot?
at most you will have a removable bucket for easy cleaning.
Indeed, just gravity.
Basicly you want a pot that will not collapse under vacuum. The pots I produce do not even have a clamping system (not needed). Preferably the lid is see-through, or has a window (or 2, for a flashlight). The trick is in the fittings on top. Although you can use about anything, you would want something that you can stick a pipe (vacuum line) through, seals completely, and does not get clogged with resin.
Apart from purpose made (expensive) systems, there are 2 options that are attractive: pneumatic pushin fittings, which will need drilling out from the bottom, or watertight connectors from the electrical industry.
or compression fitting from swagelock. Just push the compression rings on, push the tube through and screw on the nut. that way any resin doesn’t get in the fitting.
Whiterabbit, we just use bucket liners. thin plastic shells. Anything really. Some people just release coat the inside very well, and wack out the blob of resin after it cures. you don’t have air flow when the resin is dripping in the bucket, so you don’t have to worry about the vacuum sucking the resin back up, mid-air 
Thanks that has helped a lot.
I use salsa jar as a catch pot the nipples are vacuum bag connectors from APC composites,
“Paul Newman’s Own” is the best, tasting that is
good idea. I tried making one, it broke because the top was acrylic plastic the vacuum just cracked the top of mine. I use a harbor freight one but soon will need add another resin catch pot to the shop.
Is that a wing?
For those in America, Jegs has a few vacuum canisters which I’m sure would do the trick. Can’t beat $35.
http://www.jegs.com/p/JEGS-Performance-Products/JEGS-Vacuum-Reserve-Canister/763083/10002/-1
pressurized paint containers work well
Those are really nice welds! Is that your work?
I have build some catch pots too, They are made of aluminium and have a cap out of makrolon. I use them as exsikkator for degasing my resin because i don´t need a catch pot (I only use the MTI hose).
If anyone is interested I have got 20 pcs and i can sell them for 150$ net + shipping.
We also build a bigger one for 2.6 gallon buckets, it is also made out of aluminium and a makrolon cap. It costs 590$ net + shipping. I don´t know how much tax you have to pay.
Yes, and thank you.
sam