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A bandsaw (also written band saw) is a power 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.
In 1945, Rockwell Manufacturing Company acquired Delta Machinery and renamed it the Delta Power Tool Division of Rockwell Manufacturing Company and continued to manufacture in Milwaukee. In 1966, Rockwell invented the world's first power miter saw. In 1981, Rockwell's power tool group was acquired by Pentair and re-branded Delta Machinery.
On a vertical band knife machine usually a narrow width band knife blade is used, the most common width being 10 mm (0.39 in). The length of the band knife blade depends on the supplier of the band knife machine. The dimensions are indicated on a small metal tag pasted or riveted on the machine.
There is always one more point per inch than there are teeth per inch (e.g., a saw with 14 points per inch will have 13 teeth per inch, and a saw with 10 points per inch will have 9 teeth per inch). Some saws do not have the same number of teeth per inch throughout their entire length, but the vast majority do.
A diamond blade is a saw blade which has diamonds fixed on its edge for cutting hard or abrasive materials. There are many types of diamond blade, and they have many uses, including cutting stone, concrete, asphalt, bricks, coal balls , glass, and ceramics in the construction industry ; cutting semiconductor materials in the semiconductor ...
In October 2004, the Pentair Tools Group — comprising Porter-Cable, Delta Machinery, DeVilbiss Air Power, and others — was purchased by Black & Decker, now Stanley Black & Decker. Porter-Cable is headquartered in Jackson, Tennessee. Manufacturing in the United States has mostly ceased; tools are now made primarily in Mexico and China.