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The file that has the least harsh teeth is graded as very smooth.
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File grades of cut. The double cut file has two rows of teeth which cross each other. Grade of cut. A file is a tool used to remove fine amounts of material from a workpiece. Improved taper file triangular cross section.
Bastard cut second cut and smooth cutthe coarser the cut of the file the rougher the finish of the worktherefore the size of the file and the grade of its cut must be taken into account against the amount of stock to be removed and the fineness of fi nish that is required. Files are usually made in two types of cuts single cut and double cutthe single cut file has a single row of teeth extending across the face at an angle of 650 to 850 for the length of the file. Most files also have three grades of cut. For machine filing and saw filing machines.
Bastard second cut and smooth. Some of the grades of cut are shown below. Bastard cut second cut and smooth cut. The differences from coarse to smooth are relative to the length of the file because coarseness of a file increases as the length from point to heel increases.
Band saw file narrow edges for sharpening band saw blades. A narrow pointed tang is common at one end to which a. 6 or 7 long. Should be secured in a handle for comfort.
Coarse cut bastard cut second cut and smooth cut. There are four different grades for american pattern files. It is common in woodworking metalworking and other similar trade and hobby tasksmost are hand tools made of a case hardened steel bar of rectangular square triangular or round cross section with one or more surfaces cut with sharp generally parallel teeth. For example a 6 bastard cut is a lot finer than a 12 bastard cut.
American pattern files are available in three grades of cut. They range in that order from fewest to most teeth per inch. Double cut machine file regular slim extra slim and double extra slim. The degree of coarseness increases with longer file length but the differences between bastard second and smooth cut remain proportionate.
Most american pattern files are available in three grades of coarseness. Grades of cut files. Files are often graded according to the roughness smoothness of cut. 63 and 64.