Files, Rasps, and Similar Tools - File, Microplane, Rasp, Planemaker's Float (Paperback)

Chapters: File, Microplane, Rasp, Planemaker's Float. Source: Wikipedia. Pages: 19. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: A file is a metalworking and woodworking tool used to cut fine amounts of material from a workpiece. It most commonly refers to the hand tool style, which takes the form of a hardened steel bar with a series of sharp, parallel ridges, called teeth. Most files have a narrow, pointed tang at one end to which a handle can be fitted. Archaeologists have discovered rasps made from bronze in Egypt, dating back to the years 1200 - 1000 B.C., Archaeologists have also discovered rasps made of iron used by the Assyrians, dating back to the 7th Century B.C. Among the drawings of Leonardo da Vinci is a sketch of a machine tool for the cutting of files (the chisel would make one strike, swaging a tooth, then automatically advance into position for the next tooth, and strike again). Machining in the mid 19th century was heavily dependent on filing, because milling practice was slowly evolving out of its infancy. As late as the early 20th century, manufacturing often involved filing parts to precise shape and size. In today's manufacturing environment, milling and grinding have generally replaced this type of work, and filing (when it occurs at all) usually tends to be for deburring only. Skillful filing to shape and size is still a part of diemaking, moldmaking, toolmaking, etc., but even in those fields, the goal is usually to avoid handwork when possible. Relative tooth sizes for smooth, 2nd cut and bastard filesFiles come in a wide variety of sizes, shapes, cuts, and tooth configurations. The cross-section of a file can be flat, round, half-round, triangular, square, knife edge or of a more specialized shape. There is no unitary international standard for file nomenclatu...More: http: //booksllc.net/?id=54961