I not sure it鈥檚 doing anything. When I opened the box, it had plenty of grit, thought I鈥檇 touch up a few (pro quality) kitchen knives; after two, all the grit seemed to be gone and its smooth with no touch of grit on it any more. When I try to sharpen anything now they pretty much feel the same, not sharp at all. And yes, I know how to use it.
I not sure it鈥檚 doing anything. When I opened the box, it had plenty of grit, thought I鈥檇 touch up a few (pro quality) kitchen knives; after two, all the grit seemed to be gone and its smooth with no touch of grit on it any more. When I try to sharpen anything now they pretty much feel the same, not sharp at all. And yes, I know how to use it.