Glue a sheet of 1000 grit wet/dry sandpaper to the other side of that plywood and you have yourself a complete sharpening system!I use a SV30 knife and should not need to touch up the blade. In case I do want to touch up, for example to cape out a head, I made a small strop. It is about 1" by 6" leather glued on 1/4" plywood and treated with diamond slurry. Small and light but will dress even a blade of the tougher to sharpen steels.