Timber Mill - Timber Cutting - (Ara Machine) - How Its Made

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  • čas přidán 26. 10. 2018
  • Timber Mill - Timber Cutting - (Ara Machine) - How Its Made
    Timber mills use very large band saws for ripping lumber; they are preferred over circular saws for ripping because they can accommodate large-diameter timber and because of their smaller cut size, resulting in less waste.
    A band saw is a saw with a long, sharp blade consisting of a continuous band of toothed metal stretched between two or more wheels to cut material. They are used principally in woodworking, metalworking, and lumbering, but may cut a variety of materials. Advantages include uniform cutting action as a result of an evenly distributed tooth load, and the ability to cut irregular or curved shapes like a jigsaw. The minimum radius of a curve is determined by the width of the band and its kerf. Most band saws have two wheels rotating in the same plane, one of which is powered, although some may have three or four to distribute the load. The blade itself can come in a variety of sizes and tooth pitches, which enables the machine to be highly versatile and able to cut a wide variety of materials.
    The idea of the band saw dates back to at least 1809, when William Newberry received a British patent for the idea, but band saws remained impractical largely because of the inability to produce accurate and durable blades using the technology of the day. Constant flexing of the blade over the wheels caused either the material or the joint welding it into a loop to fail.
    Nearly 40 years passed before Frenchwoman Anne Paulin Crepin devised a welding technique overcoming this hurdle.
    This Video was shot at a saw mill in Aish baagh, Lucknow, India by Mahakavi, Mirza Jamal on mid March, 2018.
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