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Fordite in Dearborn, Michigan, 2019. Fordite, also known as Detroit agate, Motor City agate, [1] paint rock, or paint slag, [2] is a lapidarist term for polished pieces of finely layered paint masses from automobile factories.
The powder melts, flows, and then hardens to a smooth, durable vitreous coating. The word vitreous comes from the Latin vitreus, meaning "glassy". Enamel can be used on metal, glass, ceramics, stone, or any material that will withstand the fusing temperature. In technical terms fired enamelware is an integrated layered composite of glass and ...
Textron began planning to sell the unit in 1988, completing the sale in 1989 to Dansk International Designs. [8] [9] Brown-Forman Corporation acquired Gorham from Dansk in 1991. [10] The unit was sold in 2005 to Department 56 in the Lenox holdings transaction, with the resulting company renamed as Lenox Group. [11] [12]
Coade stone: A type of artificial stone moulded into sculptures and architectural details, imitating marble. Developed in England around 1770. Developed in England around 1770. Ironstone china - patented in 1813, often classed as earthenware, but very strong and vitreous, and popular for wares with heavy usage.
Bone china quickly proved to be highly popular, leading to its production by other English pottery manufacturers. [11] Both Spode's formulation and his business were successful: his formulation of 6 parts bone ash, 4 parts china stone and 3.5 parts kaolin, remains the basis for all bone china.
Artificial stone is a name for various synthetic stone products produced from the 18th century onward. Uses include statuary, architectural details, fencing and rails, building construction, civil engineering work, and industrial applications such as grindstones .
Other pottery objects such as pots, vessels, vases and figurines were made from clay, either by itself or mixed with other materials like silica, hardened by sintering in fire. Later, ceramics were glazed and fired to create smooth, colored surfaces, decreasing porosity through the use of glassy, amorphous ceramic coatings on top of the ...
8 inches (200 mm) Harveyized nickel-steel plate from 1894. Harvey armor was a type of steel naval armor developed in the early 1890s in which the front surfaces of the plates were case hardened. The method for doing this was known as the Harvey process, and was invented by the American engineer Hayward Augustus Harvey.