手工木工工具中,一分宽的槽刨刀、一分或一分半宽的窄凿是不大容易磨好的。这类工具的起码要求是:两角锋利,刃形见方。如果磨的方法不当,就不能达这个目的,还经常会出现不见两角、中间凸起的圆形刃,使用时,凿子易偏斜,俗称“走凿”;槽刨刀会因较尖一面 In handcrafted woodworking tools, a one-wide groove planer, one-minute or one-half-width narrow chisel is not easy to grind. The minimum requirements for such tools are: sharp corners and edged squares. If the method of grinding is improper, it can not achieve this purpose, and often there will be round edges that do not see the two corners and the middle convexity. When it is used, the chisel is easy to deflect, which is commonly called “walking chisel”; the groove planer will be more pointed one side