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is an ideal way of saving Cactus Juice. Amazingly, this vacuum stabilization process will dye the wood very consistently throughout its thickness. Applying vacuum: Place the lid on the chamber, open the relief valve to the full open position and start the vacuum pump/generator. There is a considerable amount of air being pulled initially causing the Cactus Juice to foam. Slowly close the relief valve while observing the Cactus Juice. As the vacuum is initially increased the foam will also increase. Ensure the foam does NOT reach the top of the chamber where it may be drawn into the fittings, gauge and hose. The liquid Cactus Juice can severely damage the electric pump and you most likely just voided its warranty. In the event Cactus Juice is drawn into the pump, the pump should be immediately serviced in accordance with the manufacturer’s directions. This is not an issue with either of the Conestoga Works Venturi pump as any resin drawn into the pump can simply be washed out with soap and water. As the vacuum is increased and the air is evacuated from the chamber, the foaming will decrease. Once the foaming has subsided, the relief valve can be fully closed to ensure maximum vacuum is reached. Run the pump at its maximum vacuum throughout the remainder of the vacuum process. The chamber will not require your total attention at this point. You will observe air bubbles being pulled from the wood. After a period of time, the bubbles will decrease in both number and size. The time for the total evacuation of the air from the wood is dependent on several factors including the variety of wood, its size, and the level of vacuum the pump/generator can pull. Thirty minutes or longer is normal. You will notice that the size of the bubbles will decrease to very tiny random bubbles being pulled from the wood when the free air is virtually voided. You may stop the vacuum at this point and will obtain excellent results; however, there is no problem with continuing the vacuum for longer periods of time. The pump/generator needs to be run throughout the entire vacuuming process. Electric pumps designed for the HVAC trade are designed to run continuously for many hours. Vacuum generators can be run indefinitely without any fear of damage. Once the bubbling has stopped, release the vacuum by opening the relief valve and shut the pump off. Observe the level of Cactus Juice as it is drawn into the wood. Do not allow the level to drop below the top of the wood; otherwise, you will need to start over with an increased quantity of Cactus Juice. Do not shut off electric pumps until the vacuum has been released for several seconds. Turning off the pump while under vacuum may damage the pump. Also, do not allow an electric pump that uses oil to run for an extended period of time while not pulling a vacuum. The wood should be allowed to soak in the Cactus Juice for at least twice the time it was under vacuum. Longer soaking (overnight) will benefit some wood varieties. The Cactus Juice is inert to PVC and may remain in the Conestoga Works vacuum chamber for extended periods of time without any detrimental effects on the chamberPDF Image | Creating usable wood using Vacuum
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