Jeff Patrick
Joined: 2004-04-15
Location: Bainbridge Island, WA
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It is an interesting idea but I have to question just how effective it is. Looking at your photo, it appears that the horizontal surface being pressed by the bag is about the same area (width) as that pressing onto the edge banding. This being the case, your calculation of a total pressure of 3600 pounds is meaningless. What is important is the psi and that is still atmospheric... about 15psi. Furthermore, the wedge will reduce that about 30%. So take 15psi multiply by .707 (it looks as if the wedge is cut at 45ยบ) and you get 10.6 psi. And since this assumes no friction at the face of the wedge that pressure can be reduced even more. Nevertheless, it must be working since you don't say the edging fell off when removed from the bag.
The beauty of the vacuum bag is it's consistent pressure over a large area. Your application doesn't need this kind of pressure. You need clamps to achieve a high pressure on a small area.... or so they say. I routinely attach thin edging to panels by simply taping them in place every few inches. Thus I don't doubt for a moment that your method will work. It just seems like a lot of bother.
Jeff
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