In the beginning of my paint tests I mentioned I was concentrating on determining if James welting would work well for painting and if so what procedures, materials etc. would work best. As I progressed I decided to put some of the other brands through some endurance testing under the same conditions. They did not perform nearly as well as you can see in the pic below which shows the silver/gray welting and the black welting using the same procedures and materials. Just slightly bending the samples after a year caused the paints to crack and lift/chip. My best guess as to why would be that the expansion/contraction rates of the material differs enough from the paint that over time the paint doesn't stay adhered to the welting after repeated heating/cooling cycles. In the winter here it may go down to high 40's at night but be 80's in the daytime. . If the paint piece is removed from the sample it is still very flexible and can be twisted without cracking.
