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Tungsten carbide hole saw with arbor A 52 mm (2.0 in) hole saw with pilot bit A 115 mm (4.5 in) diamond hole saw. A hole saw (also styled holesaw), also known as a hole cutter, [1] is a saw blade of annular (ring) shape, whose annular kerf creates a hole in the workpiece without having to cut up the core material.
In the 1970s, Milwaukee Tool released the Hole Hawg, a power tool designed for drilling large holes in studs and joints. The company also released the Magnum Hole-Shooter, a 1/2" pistol drill, and became the first American manufacturer to produce a 4-1/2" angle grinder. [7]
In the context of machining, a cutting tool or cutter is typically a hardened metal tool that is used to cut, shape, and remove material from a workpiece by means of machining tools as well as abrasive tools by way of shear deformation. The majority of these tools are designed exclusively for metals.
A similar design, called a spoon-borer, has been used for ice drilling, though it is not effective in hard ice. [68] A version used by Erich von Drygalski in 1902 had two half-moon cutting blades set into the base of the cylinder in such a way as to allow the ice cuttings to accumulate in the cylinder, above the blades. [68] [69] [note 2]
Ice cutting is still in use today for ice sculpture and snow sculpture events. A swing saw is used to get ice out of a river for the Harbin International Ice and Snow Sculpture Festival each year. A swing saw is also used to cut ice out from the frozen surface of the Songhua River, China. [10] Many ice sculptures are
John C. Pritzlaff was an immigrant from Pomerania, Prussia, who came to Milwaukee in 1841, before Wisconsin was a state. [1] In 1850 he, August Suelflohn, and Henry Nazro opened a small hardware store on Third Street called John Pritzlaff and Company. Pritzlaff became the sole owner in 1866. [2]
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