The Pferd medium cut mill hand file is 8" long, has a handle, and has a rectangular shape with one rounded and one square edge and single-cut American pattern teeth for shaping and smoothing straight surfaces and rounding gullets or sharp corners. The file has single-cut American pattern teeth on the sides and edges for finishing, sharpening, and deburring. An ergonomic plastic handle helps provide secure gripping.
Hand files are used to remove material and smooth and shape workpieces. They have forward-facing cutting teeth and cut when pushed over either a stationary or rotating workpiece. Single-cut teeth are single rows cut diagonally across the width of the file. Double-cut teeth have two sets of rows cut in opposite directions. American pattern files have three coarseness grades. Coarse, also known as bastard cut, is suitable for efficient, heavy material removal where finish is not a concern. Medium, also known as second cut, offers average material removal and finish quality. Fine, also known as smooth cut, provides the smoothest finish. Swiss pattern files have eight coarseness grades, from 00 (coarse), 0 (medium), and 1 to 6 (fine to finest), offering a smoother finish than equivalent American pattern files. For Swiss pattern files the length of the tool is the length of the blade, not counting the tang, which is the pointed end fitted for a handle; for American pattern files the length of the tool is its entire length, including the tang.
Pferd manufactures abrasives and cutting tools for grinding, finishing, and cutting. The company, founded in 1799 in Germany, has its U.S. headquarters in Leominster, MA. It meets International Organization for Standardization (ISO) standard 9001.