![]() The different glasses “oppose” each other when they are stirred together, creating artistic 3-D swirls. Baroque – A machine made “reamy” glass, created by combining glasses of mismatched compositions.Artique – (See Scribed-Antique, above.).Introduced by Spectrum Glass in 1996 under the trade name Artique. Quality is excellent and cost is considerably less than full-antique. The linear striations are scribed into the hot glass surface. Scribed Antique: A simulated full-antique produced by the Double Roll method.GNA (German New Antique) is a common example. Quality is excellent and cost is less than full-antique. The textural striations are mechanically applied. Drawn Antique: (also called semi-antique, machine-antique or new-antique) A simulated full-antique produced by the Vertical Draw method.Common characteristics include attractive linear striations and a very pristine surface. The cylinder is then scored lengthwise, separated, reheated and folded out into a flat sheet. The craftsman blows a glass cylinder, which is annealed and cooled. Full Antique: Term applied to art glass produced by the historical mouth-blown cylinder method.The float process is used to produce virtually all common window glass today, thus the term “float glass.” Not used for art glass production. The process produces a perfectly smooth sheet of uniform thickness in high volume. Float Process – Molten glass is pulled from the forehearth atop a bath of molten tin.Drawn glass is generally more pristine than rolled glass because its surface has remained untouched during forming. The annealing lehr is mounted vertically over the draw chamber. Vertical-Draw Method – Molten glass is pulled vertically through a slit in a large one-piece refractory block that is floating on the glass surface.Double-Roll Method – Molten glass is passed between a pair of rotating metal rolls to form the sheet.Single-Roll Method – Molten glass is poured onto a metal table and a single metal roll is used to flatten it into a sheet. ![]() Blown Cylinder Method – (See Full-Antique under Types of Glass).Thus people speak of “mouth-blown,” “double-rolled,” “drawn glass,” “float glass” etc. Sheet glass types are often by delineated by how the sheet is formed. It is written in non-technical language for ease of understanding by the student and non-professional and is not intended to be completely authoritative or all inclusive. This listing of frequently used terms and their brief descriptions includes those which apply to the products of all art glass manufacturers and not just those used in connection with Spectrum Glass. This guide is based on a document originally put out by Spectrum Glass in 2004 and the one on Oceanside Glass site. Commonly Used Terms in the Art Glass Field
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