Originally Posted by Jazzi View Post
You mention using 22ga sheet metal. I'm not sure it would be the best test substrate. Most sheet metal in a car is much thicker, no? I realize that thicker material is substantially more expensive, but it is a very important factor. The effectiveness of a CLD is significantly related to the thickness of the substrate vs the thickness of the stiff backing (aluminum in most cases).

Most floors and rockers average between 16ga and 18ga but I think 20ga - 22ga is about average for door thickness. I know 22ga is what most body shops use for welding panel repairs on the newer cars. It will differ from car to car or truck but I would think it should be fine for this test.