okay this video will show you how to sharpen a lawnmower blade with rotary grinder wheel you see this is the blade itself this the edge to be sharpened you see the NYX chips and bangs on it so it's pretty dull I'm going to do before I start I just pull the same pitch angle as the blade and I'll score through give you a quick idea I just utilize the grind but first I have to stand I'll do a fast what that'll look like that's just one pair and what's real important is the angle and that you're holding sharpening nothing with determines how hopeless the wheel you can also achieve this by a hand file in that direction you