Bench grinders are the most basic means of sharpening tools and rough edge forming of metal workpieces. Additionally, these machines can be fitted with optional wire brushes for coarse material finising or buffing wheels for final finishing and honing. The next step up is the wet stone grinder. Turning at very slow revolutions and using water as a cooling agent, these machines provide maximum sharpening effect and will not ruin the temper of your blade's metal.