Our Sharpening Stone Grit Chart
We decided to come up with a grit chart based on 10 levels. Since one person's "fine" and one manufacturer's "fine" may mean something completely different we established a 1 to 10 grit chart with 1 being the most coarse and 10 being the finest. Each of the levels links to a page where we've selected stones that meet that grit range.
||Extremely Coarse - Fastest metal removal, leaves very visible scratches in cutting edge.
||Under 150 Grit
||Coarse - Very fast metal removal, leaves visible scratches in cutting edge. Most coarse stones commonly available.
||150 - 220 Grit
||Medium Coarse - Fast metal removal rate, scratches not as visible. Finest recommended grit for dull tools and knives.
||220 - 300 Grit
||Medium - Good metal removal rate, light sctaches edge. Intermediate stage before finer grits.
||300 - 400 Grit
||Medium Fine - Minimum recommended grit for final stage of most knives. Edge does not appear sctached but frosted. Finer than medium but sharpening rate slower.
||400 - 600 Grit
||Fine - Modest sharpening rate, leaves metal edge with frosted appearance. Edge sharpness equivalent to majority of factory edges on knives, tools.
||600 - 1000 Grit
||Extra Fine - Slow sharpening rate. Edge is showing a polished looking edge. Very sharp edge better than most factory edges on good knives.
||1000 - 2000 Grit
||Extremely Fine - Edge is extremely sharp. Very slow sharpening speed. Edge reflects light very well.
||2000 - 6000 Grit
||Near Mirror Polish - Edge is very near perfect. Grits past this stage provides only modest benefit. Leave edge polished to naked eye.
||6000 - 10,000 Grit
||Mirror Polish - Sharpest edge possible, extremely slowing sharpening. Leaves mirror edge without visible flaws.