The files are classified as Double Cut, of which there are the rough, middle, bastard, second cut, smooth, and dead smooth.
The Float Cut, which is either rough, bastard or smooth; and
The Rasp Cut, either rough, bastard or smooth.
Several types are illustrated in [Fig. 55], which show the characteristics of the various cuts.
The rasps are used principally for soft material, such as wood or for hoofs, in horse shoeing, hence they need not be considered in connection with machine-shop work
Holding the File.—The common mistake on the part of the beginner is to drag the file across the work at an angle. The body of the file should move across straight and not obliquely.