I used the black easy peel Shadowfoam for a case I wanted to foam line. It was fairly straightforward to shape to the case, but the cutting and shaping of the foam was more difficult than I expected as I didn't find it peeled easily at all. I had to cut horizontally with a scalpel blade to get a nice smooth finish. I was very pleased with the finished result, but was trickier than I thought it would be. If you want it to look neat then you need some good manual dexterity and finesse. Although it took much longer to do than I anticipated,I certainly would use Shadowfoam again.