The last time I was buying Hobarts laser ply I ended up with quite a few warped sheets and some big knots, I wasn't impressed and I've steered clear of it for a while. Because HPC is still out of their nice ply and I was buying things from Hobarts anyway I thought I'd give it another shot. These sheets are much better, relatively flat and a very nice surface. It's proper 3mm instead of 2.7mm and it's sturdy which means I have to cut it at 12mm/s instead of 25mm/s. It would have its uses where you need something solid and strong. I'm beginning to appreciate all the different types of wood for what they are and I'm building up quite the library of materials.