Used to get in between the teeth of files and rasps to clean out sawdust, metal shavings and other debris. Bastard, second and smooth cuts. A multi-faceted tool used for many different tasks. Bastard Cut Mill File Flat, 8 Inch Flat Hand File with High Carbon Hardened Steel, Ergonomic Grip, Plastic Handle, Finder Flat File for Sharpening Mill or Circular Saws Ideal for Wood, Metal, Plastic 4.6 out of 5 stars 123. For the same reason, store files flat on a shelf or wrapped in a cloth roll, not loose in a box with other tools. Don't try to pound the handle down onto the tang — file steel is brittle and will shatter with impact. Nicholson 03764N Flat Bastard File, 12" File Card. Diamond File. TM 9-243 TYPES AND USES Files are used for cutting, smoothing off, or removing small amounts of metal, wood, plastic, or other material. Normally, a standard Mill Bastard file is used for drawfiling, but where a considerable amount of stock has to be removed, a Flat or Hand file (Double Cut) will work faster. FLAT, MILL, AND HAND For flat surfaces, straight edges. The file's momentum drives the tang into the handle. These tough metals should be filed with a double-cut file as they are strong enough to withstand the metal and/or alloy. Files are made in various lengths, shapes, and cuts. Rasp-cut files can be used for wood as well as lead and aluminum. Some files are designed with both round and flat surfaces and others are a file and rasp in one tool. Mill Files — Available in a variety of shapes and styles for sharpening circular and mill saws: • Regular — Rectangular cross section. 4" – 16" long. However, this roughing down leaves small ridges that will have to be smoothed by finishing with a Single Cut Mill file. $12.99. Use a double-cut file to file brass, bronze, copper, and tin. Every file has five parts: the point (1), edge (2), face or cutting teeth(3), heel or shoulder (4) and tang (5). Slightly tapers to point. Mill files may be used to shape wood (they perform best on hardwood); however, wood files will not withstand use on metal. The tang is used to attach the handle on American pattern files. Single-cut edges. 4-in-1 Tool. Single-cut top and bottom. This file has a series of individual teeth and produces a rough cut.