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A glass cutter may use a diamond to create the split, but more commonly a small cutting wheel made of hardened steel or tungsten carbide 4–6 mm in diameter with a V-shaped profile called a "hone angle" is used. The greater the hone angle of the wheel, the sharper the angle of the V and the thicker the piece of glass it is designed to cut.
Bowl of a wine glass in typical cut glass style Cut glass chandelier in Edinburgh. Cut glass or cut-glass is a technique and a style of decorating glass. For some time the style has often been produced by other techniques such as the use of moulding, but the original technique of cutting glass on an abrasive wheel is still used in luxury products.
Crystal glass (sometimes called flint glass) is a high-quality clear glass that needs an additive known as red lead. In the British colonies that would become the United States, crystal began being produced right before 1770 by a works led by Henry William Stiegel in the Province of Pennsylvania. [23] The Stiegel works ended production in 1774 ...
The glass made using this formula had good enough quality that the company could compete in the high-end of the glassware market. [62] This improvement in the formula for glass was considered one of two great advances in American glassmaking during the 19th century, the other being the invention of pressing . [ 63 ]
This formula, which is probably similar to the long–lost formula used by Europeans centuries earlier, enabled the production of high–quality glass at a lower cost. This led to mechanical innovations throughout the second half of the century, such as better furnaces for melting the raw materials and better methods of cooling the glass.
Many of the pressed pieces appear to be cut glass on casual inspection, due to the high quality of the glass and the crispness of the molding. The majority of the pieces are impressed with the company logo, a raised capital letter "H" inscribed in a diamond of approximately 1 ⁄ 4 inch (6.4 mm) in length.
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