I was out in the shop last night testing what I thought would be a great new vacuum bag design, but things didn’t go as planned. My design used a frame with vacuum bagging material stretched over it, and closed cell foam around the bottom. The frame is then placed on the platten, clamped down, and a vacuum is drawn, eliminating the need to wrestle a large panel into a bag. This is similar to some industrial vacuum veneering systems, but simplified for a home shop.
The problem I have is that I can’t pull much of a vacuum. Obviously this means leaks, however they must be small cause I am having a hard time detecting them. Have any of you built a similar system to this, and if so, could you share your experiences on making the system seal up properly.
I’ve already got a couple of the typical style vacuum bags that I’ve made, but veneering big things worries me, as it’s a hassel to get everything into the bag, and I don’t want to risk some delicate veneer that I will be pressing onto some large cabinet doors.