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锉削:无柄锉刀不宜用,当作撬棒容易断;锉后平面手勿摸,嘴吹切屑危险多。锯割:锯条松紧装得当,压力适宜防齿崩;用手扶持将断部,工件较重支架撑。钻削:钻头夹牢工件稳,带着手套不安全;切忌手拉回旋丝,不准用嘴吹碎屑。刮削:舌削边缘力勿猛,锐边锐角应去掉;工件放置要平稳,不准用刀开玩笑。
File cutting: Shank rasher should not be used as a crowbar easily broken; flat hands do not touch after the file, the mouth blowing more dangerous chips. Sawing: saw blade installed properly, the pressure suitable for anti-toothed collapse; hand to support the broken part, the workpiece heavier support stand. Drilling: The drill bit is firmly fastened to the workpiece, unsafe with gloves; Scraping: Tongue edge edge force not fierce sharp edge acute angle should be removed; the workpiece placed to be smooth, not allowed to use a knife to joke.