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锉刀Files



锉刀长度通常指从锉梢端至锉肩长度，特别说明的除外
锉刀长度的选择：根据工件材料和尺寸的大小，以及希望的锉削行程选择锉刀长度
Length IS measured exclusive of tang，from point to heel，unlesss pecified otherwise
Desired stroke length，type of material and size will determine length required

单锉纹Single-cut


由一组单向、平行的锉齿构成
进行锉削所需压力较小，通常用于表面质量要求高的工件，或锉削刀、剪、 锯的刃口
Single set of parallel，diagonal rows of teeth
Single—cut files are often used with light pressureto produce a smooth surface

finesh or to put a keen edge on knives，shears Or saws.


双锉纹Double-cut


由两组交叉的锉纹构成
主锉纹起主要锉削作用，主锉纹覆盖辅锉纹
两组锉纹的方向相反，锉纹斜角不同
进行锉削所需压力较大，锉削材料的速度快
2 sets of diagonal rows of teeth
Second set of teeth cut in opposite diagonal direction and on top of the first set
First set of teeth is known as the overcut，second is known as Upcut is finer than overcut

Double—cut file is used with heavier pressure than the singIe—cut and removes material faster from the workpiece