1x30 inch belt sander with grits in the 400, 600, 900, leather belt with extra, extra fine green compound has opened up a new world of sharpness. The belt sander is very fast, like 1 to 5 five minutes or less to a mirror edge. I had a Lansky and another blade holding guided stone sharpener. On the straight part of the edge it worked great, but the belly, curve, and tip always less sharp. This went on for years. Pissed, that what I had was not working, I bought a Smith's diamond rod. Made knives sharp all the way to the tip but nothing hair popping or mirrored. This belt sander with a leather belt is the bomb. BOOM! Scary sharp knife.