怎样磨剃刀？

见过人磨，没什么两样。估计那块磨石很重要。又绵又细，带青色。天然磨石。磨的时候往后拉多。只几下就换平时用的皮带。仅供参考。

几十年前就是楼上的方法磨刀，
现代的方法，是用铸铁轮，对其端面精加工，保证平整度，光洁度，蘸上磨料（一种膏体，有许多规格，模具行业常使用），将刀压上去研磨，
电剪刀的刀片也是这样研磨。
日本的精密加工，例如汽车的阀片、阀门，用精密机床加工还达不到要求，日本人也一样用专用机床研磨，用人工研磨。
The next generation keyboard, future keyboard!
challenge and subverting the global computer keyboard, keyboard music instruments in 25 years ago，
The pioneer of the Chinese people firstly entered this area. who sent it into the modern house of CEO of Microsoft?
To challenge AT&T of the United States by improving communication deficiencies
Improving communication deficiencies, Chinese people challenge AT&T of the United States.

磨磊