One of the best ways to sharpen and smooth a straight razor is by using a sharpening paste. Simply put, a sharpening paste is a compound that varies in abrasiveness. The micron of sharpening paste measures the size of abrasive grain used. How to Use Sharpening Pastes To restore a straight razor sharpness, a progression of sharpening pastes is used. Starting with a coarse grit paste makes removing residue easy and is a quick way to prepare the blade for…