With the sizes 6", 8", 10" and 12" for choice, triangular file is made from hardened and durable steel and equipped with ergonomic soft plastic handle, suitable for metal, wood and other materials. Featuring three tapering edges, the triangular metal file is a best tool for hard-to-reach places to do the sharpening, polishing and deburring work.
||High Carbon Steel
Note: The sizes are approximate.
Tips: Classifications of files
According to the applications, there are metal files, used for general filing processing; wood files or rasp, used for filing soft materials such as wood and leather; needle files, used for filing small and fine metal parts and often provided with various cross-sectional shapes in a set; special files, such as the riffler files, designed for filing glass, ceramics, metal, jade, etc.
According to the cross-sectional shape, files are divided into Flat Files, Square Files, Half Round Files, Round Files, Triangular Files, Diamond Files, Knife Files, etc. Flat files are used to file flat, external and convex arc surfaces; square files are used to file square holes, rectangular holes and narrow flat surfaces; triangular files are used to file internal corners, triangular holes and flat surfaces; half round files are used to file concave arc surfaces and flat surfaces; round files are used to file round holes, concave arcs and ellipses with smaller radius.
There are two types of files: single-cut files and double-cut files. The teeth of the single-grain file are inclined at an angle to the axis, which is suitable for processing soft non-ferrous metals. The teeth of the double-cut file come with a crossed arrangement, which is used for processing steel and non-ferrous metals. It can divide wide filings into many small sections, making filing more brisk.
The files have different degree of roughness and fineness of the teeth of the file, and usually are divided into rough, coarse, bastard, second-cut, smooth, and dead smooth. The diamond file has no file teeth, but a layer of diamond powder is electroplated on the surface of the file to file hardened metal.