The foam layers are around 30mm (rounded up). If I remember rightly, they're just over an inch. I know because I had to measure them for my design AS project ;DHey, I have a slight transport/storage problem with my IG army, and could someone answer a few questions?
1) how thick are the foam trays in the GW carry cases?
2) is there anywhere I can get cheap foam that I can cut to shape easily?
Thats exactly how I transport most of my army and do a little customization. I use cottonballs ripped up and light packed for my more delicate miniatures also most hobby stores like Hobbylobby and some local places have a few more alternatives.The cheap alternative is buy a big, empty, tough case (toolboxes work well, and are cheap), and come up with your own way of storing the models inside.