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The whole saw blade is made of High-Speed Steel (HSS). HSS saw blades are mainly used to cut steel, copper, aluminum and other metal materials. If high-strength steels (e.g., stainless steel) are to be cut, the blades made of cobalt HSS (e.g. M35, M42) should be used. Tungsten carbide
Circular saw with a diamond blade for cutting asphalt and concrete. The rotary motion of a circular saw lends itself to cutting hard materials like concrete, asphalt, metal, tile, brick, and stone with an abrasive saw such as a tile saw. Diamond blades and cut off wheels are commonly used in these applications.
Early cutting boards dated as far back to early 3000 BC. Cutting board are and have been widely used. They could be seen in ancient Egypt and Greek and Roman kitchens. Early cutting boards were flat stones or large wooden slabs, likely emerging out of necessity. Wood soon became a preferred material for its durability and availability.
Two-man saws were designed to cut in both directions. Careful tooth design was necessary to clear the sawdust during the cut. Two-man saws were known to the ancient Romans, but first became common in Europe in the mid-15th century. In America, crosscut saws were used as early as the mid-17th century, but felling saws only began to replace axes ...
Typical full-size hacksaw frame, with 12" blade. A hacksaw is a fine-toothed saw, originally and mainly made for cutting metal. The equivalent saw for cutting wood is usually called a bow saw. Most hacksaws are hand saws with a C-shaped walking frame that holds a blade under tension.
In 1963, Ingersoll Milling Machine Co. Rockford, Illinois developed a saw which cut plates made of high-strength carbon steel using carbide saw blades. The horizontal ways were mounted on a beam above the plate.
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