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Burr Coffee Grinders and Conical Burr Coffee Grinders: Coffee beans are loaded into a hopper which feeds them into the grinding mechanism (burrs), then the ground coffee is deposited into a receptacle or directly into your portafilter depending on the model. The primary advantage of burr coffee grinders is uniform grind fineness which is optimal for any brewing process. Higher quality burr grinders also feature a gear reduction or heavy-duty, slow speed motor which reduces heat generated by friction and preserves the coffee's natural flavor. Slower grinding speeds also tend to reduce static electricity build-up for cleaner work area. Conical burr grinders additionally decrease grinding speeds and therefore are considered better than the flat burr grinders.
