This is my kit to sharpen hard steel knives, chisel and planer blades. The roller i only use to establish the proper angle on chisels and planer blades, I hand sharpen for maintaining a sharp edge. The white stone is 8,000 polishing grit and that's what I use to de burr chisels and planer blades. The burr on those tools is always on the flat bottom and a stone works better than a strop. My leather strop in the middle is only for de burning knife edges. I keep my stones super flat just for those tools too using the 400 side of my diamond plate. I spray soapy water on all the stones (except the diamond plates) wiping and re spraying constantly. For cheap soft steel knives I use a fine grit diamond "steel" which I've found to be a super fast way to get them plenty sharp.
Edit: the other side of the white stone is the 3,000 grit side, that's the stone that gets an edge scary sharp.
I only use the grinding wheel for axes and cold chisels