The edges of all steel components are beveled and polished, and each tooth of each gear wheel is manually polished with a rotating hardwood disk to reduce friction at the wheel contact points.

• 所有的不锈钢部件边缘都被倒角抛光，并且每一个齿轮的齿都被硬木转盘手工旋转抛光以减小齿轮接触点间的摩擦。