band saw

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Video: band saw in action

A band saw is a machine tool whose tool consists of a band saw blade that is soldered or welded to form a closed ring .

Band saws are mainly produced as stationary machines, but there are also electric hand band saws . Smaller models are used as table band saws in carpentry shops . Mobile variants of a band saw on wheels were still being used in the 1960s by timber merchants in the countryside to saw firewood into manageable pieces, which the buyer then split with an ax on his own. Such machines are still used today.

Another form of band sawing is sawing with a diamond-coated band, which creates a cut surface in grinding quality. Diamond band saws are mainly used in industrial production or in materials research or in laboratories. This sawing technique is particularly suitable for cutting graphite , catalysts , GRP , plastinates , sample preparations and glass.

The band saw blade , which is available in all common toothings and sets, is guided over two wheels, so that an endless, uninterrupted cut is possible.

Band saws are used, for example, to saw wood , metal , plastic , textiles , leather , aerated concrete ; however, the main focus of use is in woodworking. In the food industry, stainless steel models are used for sawing frozen meat and bones.

With special band saws, so-called block band saws, cut wood is produced from tree trunks . Log band saws are often mounted horizontally (especially in mobile sawmills).

Both straight and curved cuts are possible with a band saw. Circular blanks can also be produced with special auxiliary devices.

A distinction is made between vertical and horizontal band saws, which relates to the position of the saw band. Horizontal band saws are mostly used for cutting bar stock (steel, other metals). With them, the tape is on a foldable bracket, the cutting pressure is regulated by a hydraulic damper. Vertical band saws, on the other hand, are used more for cuts from the surface.

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