There’s something about making a cup of coffee that riles people up. Somehow, each debate breeds its own sub-debates — brewer vs. pour over. Hario vs. Chemex. Medium grind vs. coarse grind, and so on.

This multifunctional machine is a DIY device that can be used at home. With a 12V DC 775 motor, it is already enough to drive a blade for grinding, cutting, and sawing. This device can be powered by a ...

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