I'm going to put in a "steer clear of the Best Value Vac pots!" here.
Dug my little one out the other day to stabilize a few pieces of oak crotch, It's 2 years old, never been out of the box. I couldn't get it to hold vacuum at all. Seemed to be hoses, so I added hose clamps, helped a little, but still no luck. Removed the straight barbed fitting on the vaccum line, attached the hose to the barbed fitting on the ball valve, and installed a radiator pet cock for a bleeder valve, still no luck, although it did get better. Tightened the nuts on all the fittings after seeing bubbles popping up around each of the ports, still no luck. At this point it will bleed down from 29.5 inches of vaccum to nothing in about 10 minutes; was 45 seconds when I started, still getting air bubbles popping up under the lid around the suction port.
Have been running it, holding vacuum on it for a few minutes to 15 minutes or so every time I got out to the shop, over the course of 2 - 3 days now. Still getting some air out of my pieces, one was dense enough it didn't bubble much to begin with and hasn't floated at all, one has soaked up enough Cactus Juice that it no longer floats, the other still surfaces when weight is removed. So it is at least making headway.
Then last night, after only maybe an hour or so of vacuum actually being applied, at best, and the lid sitting on the pot for 2-3 days now, I fired the pump up and the cover started crazing. Now each time I start it, the lid cracks more and more, and it appears I may have to seek a glass cover much sooner than I anticipated! Wouldn't swear to it, but if I had to guess, the lid on this thing is breaking down rapidly as a result of prolonged exposure to the Cactus Juice fumes, and what little Juice has splattered up there from all the little bitty bubbles popping.
Not a happy camper, to say the least!!
Hoping the bigger pot actually works like it's supposed to, and stands up better than this little one has.
Aside from that, the stock within is living up to my expectations and is really looking amazing!
Went back and looked at their ad and since I'm not the only one that has bought one of these for this purpose I'm going to assume this wasn't there long ago when I purchased mine, but it now says way down at the bottom o the product description, 3/4 of the way down the page...
Quote:
Compatibility Explanation:
• BestValueVac® Chambers are not compatible with stabilization resin (i.e. Cactus Juice™, Gator Venom™, Minwax™ etc.), alcohol, ethanol, acetone and acrylic based monomers or polymers. The lid may only be cleaned with soapy water.
• ShatterVac® chambers are not compatible with stabilization resin (i.e. Cactus Juice™, Gator Venom™, Minwax™ etc.), acetone, acrylic based monomers or polymers. The lid may be cleaned with soapy water and low strength cleaning agents.
• GlassVac® chambers are compatible with all solvents and stabilization resins. We only recommend and warranty GlassVac® chambers for resin infusion and wood stabilization. The lid may be cleaned with any solvent or cleaning agent.