Choosing the Right Coffee Grinder - I Need CoffeeJul 17, 2012 . Though high speed, it give rise to heat that affects the quality of the end . The gear-reduction low speed grinder has a high speed motor.low heat coffe grinder,Titan Grinder Project: Does burr heating coffee grounds negatively .The Super Jolly also transfers more heat to the coffee while grinding. . The delta between the two grinders is so low I doubt that temperature.
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