A flat burr grinder features two horizontal blades, one positioned upwards and the other facing downwards. The coffee beans are placed between the burrs and ground, before being dropped and turned twice at 90 degrees.
In general, flat burr grinders tend to generate more heat and noise compared to conical burr grinders. However, they are also known for producing some of the most consistent coffee grounds due to their flat and large surface area, which leads to a smoother and uniform size. This results in a consistent taste in every cup of coffee.