Yep, I have a large bag as well. ?I use a three way valve rigged to the vacuum line and duct tape my Festool to the split in the line. ?Open the valve, evacuate the bag, then turn the Festool off and close the valve. ?Works great.
I was taught that you need to be able to pull 21 inches of mercury to have sufficient pressure in your bag. ?I had a Venturi that I built from Joe Woodworker¡¯s plans. ?It never would pull 21 inches, but I also am at nearly 6,000 feet in elevation. ?As a result, I bought a Veneer Systems pump and couldn¡¯t be happier. ?
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On Mar 2, 2021, at 7:52 AM, Jason Holtz <
jholtzy@...> wrote:
As Jonathan just mentioned, a fast way to evacuate a large bag is beneficial. We have a 5x10' zipper bag from Vacupress, and use their pump. It takes a long time to suck the air out of that bag with a 3" tall object being veneered. We started using an extra Fein vac that was sitting around, but any noisy shop vac would do. It's easy with the zipper to stick the vac hose in the last little opening, suck it down quick and let the pump take over.
Jason Holtz
J. Holtz Furniture
3307 Snelling Ave. South
Minneapolis, MN 55406
612.432.2765
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Jason
J. Holtz Furniture
3307 Snelling Ave. South
Minneapolis, MN 55406
