The art of engraving has been practiced from the earliest ages. The prehistoric
Aztec hatchet given to
Alexander von Humboldt in
Mexico was just as truly engraved as a modern copper-plate which may convey a design by
John Flaxman; the Aztec engraving may be less sophisticated than the European, but it is the same art form. Jewelry and many types of fine metal works frequently are engraved as well as
furniture. Engraving often is used as an embellishment of knives, swords, guns, and rifles.
Niellos The important discovery which made line engraving one of the multiplying arts was the accidental discovery of how to print an
incised line. This method was known for some time before its real utility was realized. The
goldsmiths of
Florence in the middle of the 15th century ornamented their works by means of engraving, after which they filled up the hollows produced by the
burin with a black
enamel-like substance made of
silver,
lead, and
sulfur. The resulting design, called a
niello, was much higher in
contrast and thus, much more visible. As this enamel was difficult to remove, goldsmiths developed alternate means of viewing their work while still in progress. They would take a sulfur cast of the work on a matrix of fine
clay, and fill up the lines in the sulfur with
lampblack, producing the desired high-contrast image.
Beginnings of European printmaking It was discovered later that a
proof could be taken on damped
paper by filling the engraved lines with
ink and wiping it off the surface of the plate. Pressure was then applied to push the paper into the hollowed lines and draw the ink out of them. This was the beginning of plate printing. This convenient way of proofing a niello saved the effort of producing a cast, but further implications went unexplored. Although goldsmiths continued to engrave nielli to ornament
plates and
furniture, it was not until the late 15th century that the new method of printing was implemented.
Early style In early
Italian and
German prints, the line is used with such perfect simplicity of purpose that the methods of the artists are as obvious as if we saw them actually at work. In all these figures the
outline is the primary focus, followed by the lines which mark the leading folds of the
drapery. These are always engravers' lines, such as may be made naturally with the burin, and they never imitate the freer line of the pencil or etching needle.
Shading is used in the greatest moderation with thin straight strokes that never overpower the stronger organic lines of the design. In early metal engraving the shading lines are often
cross-hatched. In the earliest woodcuts they are not. The reason being that when lines are incised, they may as easily be crossed, as not. Whereas when they are reserved, the crossing involves much non-artistic labor.
Italy The early style of Italian engravers differs greatly from that of a modern
chiaroscurist.
Mantegna, for example, did not draw and shade at the same time. He got his outlines and the patterns on his dresses all very accurate initially. Then he added a veil of shading with all the lines being straight and all the shading diagonal. This is the primitive method, its peculiarities being due to a combination of natural genius with technical inexperience.
Marcantonio, the engraver trained by
Raphael, first practiced by copying German woodcuts into line engravings. Marcantonio became an engraver of remarkable power and through him, the pure art of line-engraving reached its maturity. He retained much of the simple early Italian manner in his backgrounds. His figures are modeled boldly in curved lines, crossing each other in the darker shades, but left single in the passages from dark to light and breaking away in fine dots as they approach the light itself, which is of pure white paper. A new Italian school of engraving was born, which put aside minute details for a broad, harmonious treatment.
Germany The characteristics of early metal engraving in Germany are demonstrated in the works of
Martin Schongauer (d. 1488) and
Albrecht Dürer (d. 1528). Schongauer used outline and shade as a unified element, and the shading, generally in curved lines. His skill is far more masterly than the straight shading of Mantegna. Dürer continued Schongauer's curved shading, with increasing manual delicacy and skill, and over-loaded his plates with quantities of living and inanimate objects. He applied the same intensity of study to every art form he explored.
Peter Paul Rubens and the engravers he employed, made marked technical developments in the field of engraving. Instead of his finished paintings, Rubens provided his engravers with drawings as guides, allowing them to discard the Italian outline method and in its place substitute
modeling. They substituted broad masses for the minutely-finished detail of the northern schools, and adopted a system of a dark and light characteristic of engraving, which reportedly Rubens stated, rendered the detail as more harmonious. ==17th and 18th centuries==