California Air Tools 365CW Pressure Pot for Resin Casting - 10 Gallon Capacity, 80 PSI Working Pressure - Perfect for Epoxy Resin Art, Jewelry Making & Woodworking Projects

I bought a much heavier duty version of this, years ago, from Reynolds Advanced Materials ( who I love ) and it cost me $700+ dollars... and it never held it's pressure from day-one. Sometimes molds take 24 hours to cure under pressure, so I'd have to baby-sit it and re-up the pressure about every 3-4 hours... and that sucks.This one is SUCH a better value. This thing works great. After you pressurize, wait one minute ( it'll go down about a pound ) and re-up to the pressure you want. And It'll stay in perpetuity.I bought a second one, it was so great! And they're packaged really well. Great value.I do wish one of these companies would make a tool that fits over the wing-nut so you can tighten and open it faster and easier, with some leverage ( for that first tight turn ). I open and close these many times a day, and it starts to wear out my "wimpy artist" wrists.