Diamond Blade Sharpener. Some people sharpen their shaver blades daily. The colder your ice, the more frequently you need to bring back the razor edge with a diamond sharpener. Sharper blades will shave finer snow. We always recommend owning an extra set of blades, so you can sharpen them at your convenience and always have a sharp set ready to go! Works with almost any standard shave ice or snow cone machine blade!