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  2. Roman metallurgy - Wikipedia

    en.wikipedia.org/wiki/Roman_metallurgy

    Roman silver ingot, Britain, 1st–4th centuries AD. Lead ingots from Roman Britain. Metals and metal working had been known to the people of modern Italy since the Bronze Age. By 53 BC, Rome had expanded to control an immense expanse of the Mediterranean. This included Italy and its islands, Spain, Macedonia, Africa, Asia Minor, Syria and ...

  3. Steel engraving - Wikipedia

    en.wikipedia.org/wiki/Steel_engraving

    Steel engraving. Steel engraving is a technique for printing illustrations based on steel instead of copper. It has been rarely used in artistic printmaking, although it was much used for reproductions in the 19th century. Steel engraving was introduced in 1792 by Jacob Perkins (1766–1849), an American inventor, for banknote printing.

  4. Metalcut - Wikipedia

    en.wikipedia.org/wiki/Metalcut

    Page border by Hans Holbein the Younger; revival of the first technique.. Metalcut was a relief printmaking technique, belonging to the category of old master prints.It was almost entirely restricted to the period from about 1450 to 1540, and mostly to the region around the Rhine in Northern Europe, the Low Countries, Germany, France and Switzerland; the technique perhaps originated in the ...

  5. Intaglio (printmaking) - Wikipedia

    en.wikipedia.org/wiki/Intaglio_(printmaking)

    Intaglio (/ ɪnˈtæli.oʊ, - ˈtɑːli -/ in-TAL-ee-oh, -⁠TAH-lee-; [1] Italian: [inˈtaʎʎo]) is the family of printing and printmaking techniques in which the image is incised into a surface and the incised line or sunken area holds the ink. [2] It is the direct opposite of a relief print where the parts of the matrix that make the image ...

  6. Electrochemical coloring of metals - Wikipedia

    en.wikipedia.org/wiki/Electrochemical_coloring...

    Electrochemical coloring of metals is a process in which the surface color of metal is changed by electrochemical techniques, i.e. cathodic or anodic polarization. The first method of electrochemical coloring of metals are certainly Nobili's colored rings, discovered by Leopoldo Nobili , an Italian physicist in 1826.

  7. Engraving - Wikipedia

    en.wikipedia.org/wiki/Engraving

    Other terms often used for printed engravings are copper engraving, copper-plate engraving or line engraving. Steel engraving is the same technique, on steel or steel-faced plates, and was mostly used for banknotes, illustrations for books, magazines and reproductive prints, letterheads and similar uses from about 1790 to the early 20th century, when the technique became less popular, except ...

  8. Electrotyping - Wikipedia

    en.wikipedia.org/wiki/Electrotyping

    A copper film (the electrotype) grows onto the electrically conducting coating of the mold. Electrotyping (also galvanoplasty) is a chemical method for forming metal parts that exactly reproduce a model. The method was invented by Moritz von Jacobi in Russia in 1838, and was immediately adopted for applications in printing and several other ...

  9. History of aluminium - Wikipedia

    en.wikipedia.org/wiki/History_of_aluminium

    Aluminium (or aluminum) metal is very rare in native form, and the process to refine it from ores is complex, so for most of human history it was unknown. However, the compound alum has been known since the 5th century BCE and was used extensively by the ancients for dyeing. During the Middle Ages, its use for dyeing made it a commodity of ...

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