![]() Through the introduction and removal of oxygen in the kiln and, simultaneously, the increase and decrease in temperature, the slip transformed into a glossy black color. At this point, the unpainted zones of the vessel became red again while the vitrified slip (the painted areas) retained a glossy black hue. Finally, in the last stage, the vents were reopened and oxidizing conditions returned inside the kiln. Next, by sealing the vents and increasing temperature to around 900-950° centigrade, everything turned black and the areas painted with the slip vitrified (transformed into a glassy substance). At this point, the entire vase turned red in color. 490 BCE Culture: Greek, Attic Medium: Terracotta red-figure Dimensions: H. ![]() ![]() First, the temperature was stoked to about 800° centigrade and vents allowed for an oxidizing environment. Title: Terracotta amphora (jar) Artist: Attributed to the Eucharides Painter Period: Late Archaic Date: ca. 515 BCE (creation) Location: New York, United States - Metropolitan Museum of Art, (Current / Repository) Object Type: containers vessels calyx Measurement: 45. Not only did the pots have to be stacked in the kiln in a specific manner, but the conditions inside had to be precise. Title: Death of Sarpendon Red Figure Calyx Krater Object Date: ca. To produce the characteristic red and black colors found on vases, Greek craftsmen used liquid clay as paint (termed “slip”) and perfected a complicated three-stage firing process.
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