A slab rack usually made of steel, imagine a football goal, but two of them connected, the slabs go between the post, when the rack is full or at the limit of the loader the slabs are banded and lifted out, then moved to another area out of the way. The flitches are the boards that still have bark on, either one edge or both, most logs will give you several until you get to a cant where all the bark has been sawn off. You might want to you tube some videos of mill operations to get a better picture.. It would not hurt to see a few operations. The bands he was talking about are probably the band saw bands, you will need at least a box of 10,, If I were you, I would get with Cutting Edge and get them from him,, if you don't, and you have problems, well, don't ask me,, all I got to say,