Since ancient times, when man had the vision and are the objects that started as a great vehicle to reach it to develop the activities necessary to build, is one of the saw. The origin and the invention of this tool are not sure, theories vary from place to place. In Greek mythology, says that his nephew Perdix invented by Daedalus (legendary architect and sculptor, whose name means "cunning worker"), the saw. Chinese tradition says that thesaw was invented by Lu Ban was a thinker Stateman,, carpenter and philosopher. Studies suggest that in reality has evolved from changes in the Neolithic stone tools.
Whatever the origin, we saw to cut wood with great precision, allowing you to build this tool for mobile phones and even homes that are invoked in the stones no longer its main structural element. Saws are either as-is "powered" categories are defined as: handsaw andpowered mechanical saws. The most simple and popular type was the hand "seen", which is the type of wood, cut that must be different.
Great saws were invented to cut down trees, are often operated by two people and have larger teeth, while others have fine teeth smaller pieces of wood like plywood, the smaller the teeth of the saw may publish this material cut great precision, without making pieces. Among the saws hand, wethe following types:
- Saw Plywood: As described above, this instrument has small teeth that are close to pulling a cut, without the fine material to disperse.
- Rip saw this tool is used to cut wheat.
- Veneer: This is a fine double-edge saw teeth used for veneer) is thin slices of wood (usually 3 mm cut used to produce flat panels on doors, closets and other placesFurniture.
- Crosscut saw: This tool is used when the cuts across the grain.
This is classified as hand saws, a holistic approach, but there are many variations and each is allocated a specific material, whether it is in the wrong visa to a certain type of wood, the material tends to crack, that would ruin the tail , This is the main reason why many variants are created, the most important concept to remember is that there are differentTypes of materials that have not seen that by itself can be cut.
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