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Glass cutter, showing hardened steel cutting wheel (far left), notches for snapping, and ball (on end of handle) for tapping. A glass cutter is a tool used to make a shallow score in one surface of a piece of glass (normally a flat one) that is to be broken in two pieces, for example to fit a window.
A scoring knife or scoring tool is a handheld tool used to cut a groove in a sheet of material. The cutting edge of the knife is often made of hard material such tungsten carbide. The scoring knife is drawn across the material in a straight line (with the help of a straightedge), creating a scratch or score in the sheet. The material can then ...
Cut glass has been decorated by cutting groves or depressions in its surface. [46] The process involves making the cut, smoothing, and then polishing. The work was done by a glass cutter holding the glass against a wheel on a lathe. [47] The Romans are known to have cut glass, and glass cutting was rediscovered by Germans in the 17th Century.
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Cutting tool materials must be harder than the material which is to be cut, and the tool must be able to withstand the heat and force generated in the metal-cutting process. Also, the tool must have a specific geometry, with clearance angles designed so that the cutting edge can contact the workpiece without the rest of the tool dragging on the ...
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