Editing Stained glass (section)

===Scratching techniques===
As well as painting, scratched [[sgraffito]] techniques were often used. This involved painting a colour over pot metal glass of another colour, and then before firing selectively scratching the glass paint away to make the design, or the lettering of an inscription. This was the most common method of making inscriptions in early medieval glass, giving white or light letters on a black background, with later inscriptions more often using black painted letters on a transparent glass background.<ref>[https://boppardconservationproject.wordpress.com/2014/12/09/examples-of-writing-in-stained-glass/ "Examples of Writing in Stained Glass"], Boppard Conservation Project – Glasgow Museums</ref>

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File:Détail vitrail st Etienne photo.png|Detail from a 13th-century window in the [[Basilica of Saint-Quentin]] depicting the creation of a stained-glass window in Middle Ages.
File:Roundel with Saint Lambrecht of Maastricht MET cdi32-24-48.jpg|Renaissance roundel using only black or brown glass paint, and silver stain. The bishop-saint [[Lambrecht of Maastricht]] stands in an extensive landscape, 1510–20. Diameter {{cvt|8+3/4|in|cm}}. Designed to be placed low, close to the viewer.
File:Stained Glass Panel with the Visitation MET MED700.jpg|Detail of German panel (1444) of ''[[Visitation (Christianity)|Visitation]]''; pot metal, including white glass, black vitreous paint, yellow silver stain, and olive-green enamel. The plant patterns in the red sky are formed by scratching away black paint from the red glass before firing. Restored with new lead cames.
File:Ecce Homo (one of a pair) MET DT279321 (cropped).jpg|German glass, [[Nuremberg]], after a drawing by [[Sebald Beham]], c. 1525. Silver stain produces a range of yellows and gold, and painted on the reverse of the blue sky, gives the dark green of the cross.<ref>Barbara Butts, Lee Hendrix and others, ''Painting on Light: Drawings and Stained Glass in the Age of Dürer and Holbein'', 183, 2001, Getty Publications, {{ISBN|089236579X}}, {{ISBN|9780892365791}}, [https://books.google.com/books?id=kiA2AgAAQBAJ&pg=PA196 google books]</ref>
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