Hello,

I recently bought the starter kit for VI. I follow the instructions in the video and I am getting a vacuum pressure of around -27.5 but when I clamp off the bag between the vacuum bag and the vacuum chamber, the vacuum gauge goes immediately up. Why is this happening? In the video it stays where it is. Is there a leak in the vacuum chamber? do you have any tips how to check this? many thanks

SH

Boeing actually have a patent on the infusion process using two rows of sealing tape. In theory it does give you better vacuum integrity.

In reality, I think it's just a waste. It's perfectly possible to get a perfect seal with one line of tape, so why use double the material?