Coffee Grinders are an essential tool for coffee lovers. They allow you to make fresh coffee and grind your beans just before brewing. With a grinder you can perfectly grind the coffee which has a natural flavor and smell. Pre ground coffee beans sit on shelves for weeks and loose their natural taste. There are two main types of coffee grinders blade and burr. Blade grinders use spinning blades to chop the beans while burr grinders crush the beans between two rough surfaces producing a more consistent grind.