Rockingham Forge Ceramic Whetstones are an extensive range of knife sharpening tools, also known as waterstones, which will restore your blunt kitchen knives or hone already sharp edges in no time. This range is designed from ceramic rather than the conventional corundum used in other whetstone types, as it is longer lasting, more effective and much cleaner to use. The grit size or coarseness of a sharpening whetstone is indicated by numbers. The higher the number or GRIT, the finer the stone, the less steel it will cut through and the better it will polish the edge to a sharp bite. 240-1000 grit are coarse blocks, cutting steel more quickly and therefore best for damaged, chipped, rusty or blunt knives. 3000-8000 grit are honing or polishing stones, used to refine the edge of the blade, removing scratches and burr left from coarser stones and giving the blade a shiny, mirror finish. These stones are much harder than the traditional whetstones, so they wear a lot slower.
