While reading "leathercraft Tools: How to use them/ How to sharpen them" by Al Stohlman it shows the shape of all the stones and files to use for sharpening each tool. It doesnt tell the reader what size, grit, cut (file), or type(file eg. swiss, Grobet, needle, escapemant). Does anyone know any of the specifics of what works best for sharpening leather craft tools like the v-gouge, stitch groove, edgers etc. thank LW