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A coffee grinder uses the force of gravity to do the grinding,
this is the only way and there is no fun. This design changes the traditional way of grinding. from the force of gravity to centrifugal force. By swinging the coffee grinder it will generate centrifugal force to seperate the coffee beans
and the powder.Coffee is an important income for many countries so the value of coffee is like gold or diamonds.
Lai,Chih-Ming Chang,Yun-Jou Kuo,Cheng-Tsung Chong,Kiam Leng